This document provides an overview of head and neck anatomy, focusing on the mandible, temporomandibular joint, and facial nerve. It describes the structures and features of the mandible, such as its horseshoe shape with rami and body. It also outlines the anatomy of the temporomandibular joint, including the articular surfaces, disc, capsule, and movements. Additionally, it details the branches and innervation of the facial nerve as it courses through the parotid gland.
It contains following subheadings:
-maxilla and mandible anatomy
-TMJ(Temporo mandibular joint)
-Muscles of mastication
By:
Dr. Syed Irfan Qadeer
Prof. and HOD Department of Anatomy
SPIDMS,Lucknow
Temporomandibular joint is the most complex and unique joint of the body and to understand its surgical anatomy is very important in the surgical management of its disorders .
A detailed description of the bones of the face, their articulations and special features they posses. Also mentioned are structures that run through these bones like nerves, and muscular attachments.
It contains following subheadings:
-maxilla and mandible anatomy
-TMJ(Temporo mandibular joint)
-Muscles of mastication
By:
Dr. Syed Irfan Qadeer
Prof. and HOD Department of Anatomy
SPIDMS,Lucknow
Temporomandibular joint is the most complex and unique joint of the body and to understand its surgical anatomy is very important in the surgical management of its disorders .
A detailed description of the bones of the face, their articulations and special features they posses. Also mentioned are structures that run through these bones like nerves, and muscular attachments.
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
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!
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
Acute scrotum is a general term referring to an emergency condition affecting the contents or the wall of the scrotum.
There are a number of conditions that present acutely, predominantly with pain and/or swelling
A careful and detailed history and examination, and in some cases, investigations allow differentiation between these diagnoses. A prompt diagnosis is essential as the patient may require urgent surgical intervention
Testicular torsion refers to twisting of the spermatic cord, causing ischaemia of the testicle.
Testicular torsion results from inadequate fixation of the testis to the tunica vaginalis producing ischemia from reduced arterial inflow and venous outflow obstruction.
The prevalence of testicular torsion in adult patients hospitalized with acute scrotal pain is approximately 25 to 50 percent
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.
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
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
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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
Knee anatomy and clinical tests 2024.pdfvimalpl1234
This includes all relevant anatomy and clinical tests compiled from standard textbooks, Campbell,netter etc..It is comprehensive and best suited for orthopaedicians and orthopaedic residents.
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
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micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
2. Mandible
■ The largest and strongest bone of the face. Articulates with the skull at the temporomandibular joint.
■ Horseshoe-shaped body and a pair of rami meeting on each side at the angle of the mandible.
■ The body of the mandible, on its external surface, has a faint ridge indicating the line of fusion of
the two halves during development at the symphysis menti.
■ The mental foramen; it transmits the terminal branches of the inferior alveolar nerve and vessels.
■ On the medial surface of the body, the mental spines; these give origin to the genioglossus muscles
above and the geniohyoid muscles below
■ The mylohyoid line; an oblique ridge that runs backward and laterally from the area of the mental
spines to an area below and behind the third molar tooth.
■ The submandibular fossa, for the superficial part of the submandibular salivary gland, lies below the
posterior part of the mylohyoid line.
■ The sublingual fossa, for the sublingual gland, lies above the anterior part of the mylohyoid line
3. Mandible
■ The upper border of the body of the mandible is called the alveolar part; it contains 16 sockets
for the roots of the teeth
■ The ramus of the mandible is vertically placed and has an anterior coronoid process and a
posterior condyloid process, separated by the mandibular notch
■ The lower border of the body of the mandible is called the base.
■ The digastric fossa is a small, roughened depression on the base, on either side of the
symphysis menti. It is in these fossae that the anterior bellies of the digastric muscles are
attached.
4.
5.
6. Temporomandibular Joint
■ Condylar Surface and Glenoid Fossa
■ The articular surfaces are covered with fibrocartilage.
■ The temporomandibular joint is synovial.
■ The articular disc divides the joint into upper and lower cavities .
■ The capsule surrounds the joint and is attached above to the articular tubercle and the margins of
the mandibular fossa and below to the neck of the mandible.
■ The lateral temporomandibular ligament strengthens the lateral aspect of the capsule, and its
fibers run downward and backward from the tubercle on the root of the zygoma to the lateral
surface of the neck of the mandible.
■ Protection of External Auditory Meatus
■ The sphenomandibular ligament lies on the medial side of the joint attached above to the spine of
the sphenoid bone and below to the lingula of the mandibular foramen. It represents the remains of
the first pharyngeal arch in this region.
7. TMJ
■ The articular disc divides the joint into upper and lower cavities. It is an oval plate of fibrocartilage that
is attached to the capsule. It is also attached in front to the tendon of the lateral pterygoid muscle and
by fibrous bands to the head of the mandible.
■ These bands ensure that the disc moves forward and backward with the head of the mandible during
protraction and retraction of the mandible.
■ The upper surface of the disc is concavoconvex from before backward to fit the shape of the articular
tubercle and the mandibular fossa; the lower surface is concave to fit the head of the mandible.
■ Synovial Membrane; This lines the capsule in the upper and lower cavities of the joint.
■ Nerve Supply; Auriculotemporal and masseteric branches of the mandibular nerve
■ Movements; Depression, Elevation, Protrusion, Retrusion and Rotation
■ Depression of the mandible is brought about by contraction of the digastrics, the geniohyoids, and the
mylohyoids; the lateral pterygoids
8. TMJ
■ Important Relations of theTemporomandibular Joint
■ Anteriorly: The mandibular notch and the masseteric nerve and artery
■ Posteriorly: The tympanic plate of the external auditory meatus and the glenoid
process of the parotid gland
■ Laterally: The parotid gland, fascia, and skin
■ Medially: The maxillary artery and vein and the auriculotemporalnerve
9. Mandibular Movements
■ Elevation of the mandible is brought about by contraction of the temporalis, the masseter, and
the medial pterygoids.
■ Protrusion; contraction of the lateral pterygoid muscles of both sides, assisted by both medial
pterygoids.
■ Retraction is brought about by contraction of the posterior fibers of the temporalis
14. Facial Nerve
■ Runs forward within the substance of the parotid salivary gland
■ The temporal branch emerges from the upper border of the gland and supplies the anterior and
superior auricular muscles, the frontal belly of the occipitofrontalis, the orbicularis oculi, and the
corrugator supercilii.
■ The zygomatic branch emerges from the anterior border of the gland and supplies the orbicularis
oculi.
■ The buccal branch emerges from the anterior border of the gland below the parotid duct and supplies
the buccinator muscle and the muscles of the upper lip and nostril.
■ The mandibular branch emerges from the anterior border of the gland and supplies the muscles of
the lower lip.
■ The cervical branch emerges from the lower border of the gland and passes forward in the neck below
the mandible to supply the platysma muscle; it may cross the lower margin of the body of the
mandible to supply the depressor anguli oris muscle.
15. Buccal and Mandibular branchVII
■ Levator labii superioris alaeque nasi
■ Levator labii superioris
■ Zygomaticus minor
■ Zygomaticus major
■ Levator anguli oris (deep to the zygomatic muscles)
■ Risorius
■ Depressor anguli oris
■ Depressor labii inferioris
■ Mentalis