The document provides an introduction to medical parasitology. It defines parasites and the relationships between parasites and their hosts. It discusses the classification of parasites according to their habitat, life cycle dependence on the host, and pathogenicity. It also covers the transmission, diagnosis, and importance of human parasites. The key parasites discussed include protozoa that infect the intestines, blood, and tissues, as well as helminthic worms including nematodes, cestodes, and trematodes.
Helminthology is such an important topic not only in India but worldwide. Here is an introduction to the medically important parasites causing diseases to man.
This is simplified lecture, prepared for MBBS students, Nursing students and other medical students also helpful for NEET preparation.
Reference: Essentials of Medical Microbiology by Apurba S Sastry
Morphology, Life cycle, Clinical manifestations and laboratory diagnosis of E. histolytica from Clinical and Microbiological point of view for UG and PG Students.
Helminthology is such an important topic not only in India but worldwide. Here is an introduction to the medically important parasites causing diseases to man.
This is simplified lecture, prepared for MBBS students, Nursing students and other medical students also helpful for NEET preparation.
Reference: Essentials of Medical Microbiology by Apurba S Sastry
Morphology, Life cycle, Clinical manifestations and laboratory diagnosis of E. histolytica from Clinical and Microbiological point of view for UG and PG Students.
Introduction Parasitology. Parasites in the human body.zizwanijmtambo
Introduction to parasitology in biomedical sciences include definition of parasitology, course overview, examples and summarized explanations on topics in parasitology. The types of parasites and their effect on the human body and it's systems
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
2. Introduction
• Parasite : A living organism which receives nourishment and shelter
from another organism where it lives.
• Parasitology is the study of parasites, their hosts, and the relationship
between them
• Medical Parasitology: "the study and medical implications of
parasites that infect humans”
3. FEATURES OF PARASITES
1. Smaller than their host,
2. numerous number than host
3. Short life span than their host, and
4. Have greater reproductive potential than their host
4. ASSOCIATION OF ORGANISMS
• Parasitism:-A relationship in which an organism (the parasite)
benefits from the association with another organism (the host) whereas
the host is harmed in some way.
• Commensalism:- A relationship in which one organism,the commensal
, is benefited whereas the other organism;the host is neither harmed or
helped by the association.
• Mutualism:- A relationship in which both patterned are benefit.
• Symbiosis:- Permanent association between two different organisms, so
dependant on each other, that their life part is impossible
5. CLASSIFICATION OFPARASITES :-
A. According to their habitat:
1. Ectoparasites: parasites living on or affecting the skin surface of the host.
e.g. lice, tick, etc.
2. Endoparasites: Parasites living within the body of the host.
e.g. Leishmania species, Ascaris lumbricoides, etc.
II. According to their dependence on the host:
1. Permanent (obligate) parasites: parasite living permanently in a host and
cannot live without a host
e.g. Trichomonos species.,Plasmodium secies.
2.Temporary (facultative) parasite: The parasite is capable of independent
existence in addition to parasitic life.
E.g. Strongyloids stercolaris, Naegleria fowleri, etc
6. III. According to their Pathogenicity:
1. Pathogenic parasites:- It causes disease in the host.
E.g. E. histolytica
2. Non-Pathogenic (commensal) parasite:-The parasite derives food and
protection from the host without causing harm to the host.
E.g. Entamoeba coli
3. Opportunistic parasites:- Parasites which cause mild disease in
immunologically healthy individuals, but they cause severe disease in
immuno-deficient hosts.
E.g. Pneumocystis carnii, Toxcoplasma gondii, Isospora belli
7. HOST
Host :- In the parasitism, the partners which provide the food and shelter for
parasites, and to some degree are injured by this association, are scientifically
called as hosts. -larger, more complex and better regulated bodies
Types of Hosts:-
1. Definitive host:- is the host in which the parasite become sexually mature
(♂♀) (where the adult worm harbor or undergoing sexual reproduction).
Ex. Man
2. Intermediate host:- is host in which the parasite undergoes larval
development but does not reach sexual maturity, parasites often can undergo
asexual reproduction in this type of host.
Ex: Taenia adult------ man
Larva –--- cattle
8.
9. VECTOR
Vector:- Any arthropod or other living carrier which transports a pathogenic
microorganisms from an infected to non-infected host.
A. Biological vectors:-Those vectors that complete the life cycle a parasite
E.g.Anopheles(VectorofPlasmodium),Phlebotomus(Vectorof Leishmania),
Glossina(vectorofTrypanosoma),Simulium(VectorofOnchocerca),etc.
B. Mechanical (transport) Vectors: They are passive carriers of parasites, not
essential in the life cycle.
E.g. House fly and Chocroach as a mechanical vector for Amoebae,
Giardia, etc.
10. MODE OFTRANSMISSION
• Horizontal Direct Mode of Transmission:
-By Feco-oral route: Most intestinal parasites transmitted in this way.
• - Sexual intercourse
• - Blood transfusion
• - Direct skin penetration (soil transmitted helminthes)
• II. Vertical Direct Mode of Transmission: Transmission of the parasite is
from the mother to child through: - Congenital / transplacental
• - Transmammary (breast milk)
• Indirect Mode of Transmission requires biological vectors and/or one or
more intermediate hosts for transmission.
11. I. By ingesting infective stage of parasites:
• 1. In food, water or from hands that have been contaminated with faeces, E.g. E.
histolytica, E. vermicularis
• 2. In raw or undercooked meat, e.g. T. saginata, T. solium, T. spiralis
• 3. In raw or undercooked fish, crab, or water vegetation e.g. intestinal flukes
• 4. Water containing Cyclopes e.g., D. medinensis Parasitology
II. Penetration of Skin When in Contact with
1.Faecally polluted soil, e.g., S.stercoralis, Hook worms
2. Water containing infective stages of the parasite E.g., Cercaria of Schistosome species.
III. Through Insect Bite e.g, filarial worms, Trypanosoma species, Plasmodium species ,
Leishmania species IV. Sexual Contact, e.g., Trichomonas vaginalis
IV.Transplacental, e.g., T. gondii
V. Kissing, e.g., Trichomonas gingivalis, Trichomonas tenax
12. Types of Specimen
• Stool :-.e. g., intestinal nematodes, cestodes, trematodes and protozoa.
• Blood :- e.g., Haemoparasites Urine :- e.g., S. hematobium, T. vaginalis,
• Sputum :- e.g., P. westermani. Skin :- e.g., L. aethopica, O. volvulus, D.
medinensis and E. vermiculari
• Cerebro-Spinal fluid:- e.g., Trypanosoma rhodisense and Naegleria fowleri.
• Bone marrow:- e.g., L. donovani and T.gondii
• Lymphgland aspirates:- e.g Trypanosoma rhodisense, L..donovani and T.
gondii
• Liver aspirate :e.g.,E.histolytica, L..donovani and T.gondii
• Spleen aspirate:- e.g L..donovani and T.gondii
• Muscle biopsy:- e.g., T. spiralis Rectal scraping:- e.g., Schistosoma species
Duodenal aspirate:- e.g., G. lamblia, F. hepatica and S. stercoralis
• Bronchial biopsy :- e.g., P.carnii Perianal swab:- e.g.,E.vermicularis
13. IMPORTANCE of PARASITE
• More importance in developing countries where the social and economic
conditions require great deal of improvement in terms of better clothing,
shelter, food, provisions of wells and latrines and sewages and other
waste disposal facilities together with the means of controlling vectors.
• Most of the developing countries lie within the tropics where provides
better environmental conditions for larval development of parasites than
that of temprate regions, but also provides better conditions for the
multiplication of vectors.
14. AIM OFTHE STUDYPARASITE
-To understand the concepts of parasitism, the relationships between parasites
and hosts, between parasites and environment and the cultural and
socioeconomic factors affecting the transmission of parasites
- Know the general epidemiological aspects of parasites that affect human
- Apply simple preventive measures for specific parasites
- Know the life cycle of specific parasites and identify the important parasitic
agents affecting human health
- Apply the necessary procedures for the diagnosis of parasites in the medical
laboratory and reporting of results properly
- Apply the basic methods of specimens collection, preservation and processing
- Keep up the basic laboratory safety regulation
15. Classification of parasites
• General classification: animal parasites are classified according to international code taxonomy –
Each parasite belong to a:
•
• In classification, scientific parasitic name is of 2 parts:
Genus name and species name. Ex: Plasmodium Falciperum
Genetic name (one word): plasmodium
Species name (two words): plasmodium falciperum.
• Genus: means group of close related species.
• Species: means population with the same genetic characters.
17. Classification of Protozoan
SUBKINGDOM Class Species- examples
Protozoa Rhizopods E. histolytica
Flagellates G. lamblia
Sporozoa P. falciparum,
P. vivax,
P. malariae,
P. ovale
Ciliates B. coli
19. Characteristics of protozoa
1. Protozoa are unicellular (eukaryotic) or acellular organisms which are capable of
performing all the vital functions of life.
2. Protozoan is measured in microns (size vary from 2-150 µ).
3. Cytoplasmic extension in form of pseudopodia, flagellae or cilia are responsible
for locomotion.
4. Nucleus may be compact with diffuse chromatin or vesicular with central or
eccentric karyosome (DNA) and peripheral chromatin (RNA).
5. Respiration is mostly anaerobic.
6. Secretion: Protozoa secrete digestive enzymes, toxins, cytolysin and antigenic
substances.
7. Reproduction: may be asexual or sexual.
20. PROTOZOA
• Single-celled Eukaryotes
• Free-living or parasitic
2 forms:
1. Cyst form (infective for humans) &
2. Trophozoite form
Protozoa
Intestinal Blood and tissue
Entamoeba histolytica
Giardia lamblia
Cryptosporidium
Malaria
Toxoplasma
Trypanosoma
Leishmaina
Urogenital tract
Trichononas Vaginalis
21. According to Mode of locomotion, protozoa are classified into the following
groups:
•Class: Rhizopoda: Protozoa move by pseudopodia.
Entamoeba histolytica
•Class: Mastigophora: Protozoa move by flagellae.
Gastrointestinal flagellates: Giardia intestinalis
Genitourinary flagellates: Trichomonas vaginalis
Blood and Tissue flagellates: Trypanosoma gambiense, Trypanosoma
rhodesiense , and Leishmania species.
•Class: Ciliophora: Protozoa move by cilia. Balantidium coli
•Class: Sporozoa: Protozoa have no motor organelles .
Plasmodium species, and Toxoplasma gondii.
Protozoa
22. • According to the body systems Protozoa are mainly classified into:
1. Haemopoietic parasites.
2. Intestinal parasites.
3. Genitourinary parasites.
4. Cutaneous parasites.
5. Others.
Haemopoietic parasites:
• 1. Plasmodium species.
• 2. Leishmania species.
• 3. Trypanosoma species.
• 4. Toxoplasma species.
25. Helminthes can be classified into the following:
1- Trematodes (flukes): are members of Platyhelminthes.
Trematoda are flattened- leaf shaped non-segmented hermaphrodites except
Schistosoma species.
Examples
. Schistosoma mansoni
Schistosoma haematobium
Schistosoma japonicum
Hermaphroditic flukes
Classification of Helminths
26. 2-Cestoda
Flattened-segmented Platyhelminthes, hermaphroditic worms (Tapeworm) with body
differentiated into:
•Scolex: 1-2 mm, carries, organ of fixation in the form of suckers or bothria.
•Neck actively dividing parts which gives rise to segments
•Segments start with immature segments followed by mature segments with well-developed
reproductive organs and then by gravid segments with well gravid uterus.
Classification of Helminths
example
1 Taenia saginata and Taenia solium.
2. Hymenolepis nana.
3. Diphyllobothrium latum.
4. Dipylidium caninum.
5. Echinococcus granulosus.
6. Echinococcus multilocularis.
27. 3- Nematoda:
Nematodes are cylindrical non-segmented unisexual worms.
They have body cavity containing fluids in which organs float.
Anal and genital opening are separate in female and united in male (Cloaca).
Mouth may be provided with lips, papillae and teeth
o Intestinal Nematodes
• Ascaris lumbricoides
• Hookworms
• Enterobius vermicularis
• Trichuris trichiura
o Tissue Nematodes
• Wuchereria bancrofti
• Brugia malayi
• Brugia timori
• Loa loa
• Onchocerca volvulus
• Dracunculus medinensis
• Trchinella spiralis