The document discusses the characteristics and types of muscle tissue. There are four main characteristics of muscle tissue: excitability, contractility, extensibility, and elasticity. These characteristics allow muscles to perform important functions like movement, posture, and temperature regulation. There are three main types of muscle tissue: skeletal, cardiac, and smooth muscle. Skeletal muscle is voluntarily controlled and attached to bones. Cardiac muscle involuntarily controls the heart. Smooth muscle is involuntary and found in organs and blood vessels. The document then discusses the anatomy and functions of skeletal muscle in more detail.
Muscles is a contractile tissue which brings about movement.
Muscle cell responsible for our movement both visible and invisible, example walking, talking, bowel movement ,urination, breathing, heartbeats, the dilation and constriction of the pupils of our eyes and many other.
When we are still sitting or standing muscle cells keep us erect.
CONT...Muscles can be regarded as motors of the body.Muscles comprises about 40% to 50% (approximate) of body weight.There are approximate 650 muscles in body.Alternating contraction and relaxation of cells
Muscles is a contractile tissue which brings about movement.
Muscle cell responsible for our movement both visible and invisible, example walking, talking, bowel movement ,urination, breathing, heartbeats, the dilation and constriction of the pupils of our eyes and many other.
When we are still sitting or standing muscle cells keep us erect.
CONT...Muscles can be regarded as motors of the body.Muscles comprises about 40% to 50% (approximate) of body weight.There are approximate 650 muscles in body.Alternating contraction and relaxation of cells
The lymphatic system is part of the immune system. It also maintains fluid balance and plays a role in absorbing fats and fat-soluble nutrients.
The lymphatic or lymph system involves an extensive network of vessels that passes through almost all our tissues to allow for the movement of a fluid called lymph. Lymph circulates through the body in a similar way to blood.
There are about 600 lymph nodes in the body. These nodes swell in response to infection, due to a build-up of lymph fluid, bacteria, or other organisms and immune system cells.
A person with a throat infection, for example, may feel that their "glands" are swollen. Swollen glands can be felt especially under the jaw, in the armpits, or in the groin area. These are, in fact, not glands but lymph nodes.
The lymphatic system is part of the immune system. It also maintains fluid balance and plays a role in absorbing fats and fat-soluble nutrients.
The lymphatic or lymph system involves an extensive network of vessels that passes through almost all our tissues to allow for the movement of a fluid called lymph. Lymph circulates through the body in a similar way to blood.
There are about 600 lymph nodes in the body. These nodes swell in response to infection, due to a build-up of lymph fluid, bacteria, or other organisms and immune system cells.
A person with a throat infection, for example, may feel that their "glands" are swollen. Swollen glands can be felt especially under the jaw, in the armpits, or in the groin area. These are, in fact, not glands but lymph nodes.
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
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
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.
Title: Sense of Smell
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 primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
- 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
- Link to NephroTube social media accounts: https://nephrotube.blogspot.com/p/join-nephrotube-on-social-media.html
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!
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
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.
2. There are four characteristics associated with muscle tissue:
Excitability - Tissue can receive & respond to stimulation
Contractility - Tissue can shorten & thicken
Extensibility - Tissue can lengthen
Elasticity - After contracting or lengthening, tissue always
wants to return to its resting state
3. The characteristics of muscle tissue enable it to perform some important
functions, including:
Movement – both voluntary & involuntary
Maintaining posture
Supporting soft tissues within body cavities
Guarding entrances & exits of the body
Maintaining body temperature
5. Skeletal muscle tissue
• Associated with & attached to the skeleton
• Under our conscious (voluntary) control
• Microscopically the tissue appears striated
• Cells are long, cylindrical & multinucleate
6. Cardiac muscle tissue
• Makes up myocardium of heart
• Unconsciously (involuntarily) controlled
• Microscopically appears striated
• Cells are short, branching & have a single nucleus
• Cells connect to each other at intercalated discs
7. Smooth (visceral) muscle tissue
• Makes up walls of organs & blood vessels
• Tissue is non-striated & involuntary
• Cells are short, spindle-shaped & have a single nucleus
• Tissue is extremely extensible, while still retaining ability to contract
8.
9. Anatomy of skeletal muscles
Skeletal
muscle
fiber (cell)
Muscle Fascicle
Surrounded by
perimysium
Surrounded by
endomysium
endomysium
perimysium
Skeletal
muscle
Surrounded by
epimysium
epimysium
tendon
10. Skeletal muscle is surrounded by a thick connective sheet termed the fascia
Underneath this is another layer of connective tissue called the epimysium, which extends inwards
as the perimysium into the muscle, splitting fibers into bundles termed fascicles.
Each fascicle is surrounded by another layer of connective tissue termed the endomysium.
This structure separates and protects the muscle and also acts to spread force throughout the muscle,
preventing damage.
fascia: A sheet of thick connective tissue which surrounds a muscle.
epimysium: A sheet of connective tissue lying below the fascia, also surrounding a muscle.
perimysium: The continuation of the epimysium into the muscle, splitting fibers into fascicles.
fascicle: A group of muscle of fibers surrounded by the perimysium.
endomysium: A sheet of connective tissue which wraps each fascicle.
13. Parts of a skeletal muscle
Origin: it Is the proximal attachment which usually remains fixed during contraction
of muscles.
Fleshy part: a muscle may be fleshy partly or completely throughout its length.
Tendon: A tough band of fibrous tissue that usually connects a muscle with a bone.
Apponeurosis: A tough flat sheet of fibrous tissue that connects muscle with bones or
with the fascia of other muscles.
Insertion: it is the distal moveable end of skeletal muscle which moves during
contraction.
15. An Overview of the
Major Skeletal Muscles
Figure 7-11(a)
16. An Overview of the
Major Skeletal Muscles
Figure 7-11(b)
17. Classification of skeletal Muscles
1. According to the shape and fascicular architecture:
The muscles designed for strength are of pinnate type
The ones designed for speed have parallel fibers.
Parallel: A muscle with a common point of attachment, with fascicles running parallel to each other.
Circular: A ring like band of muscle that surrounds a bodily opening, constricting and relaxing to
control flow.
Pennate: A feather shaped muscle with fascicles that attach obliquely (at an angle) to a central
tendon.
Convergent: A muscle with a common point of attachment, although individual fascicles do not
necessarily run parallel to each other.
18.
19.
20. 2) According to the myoglobin content:
• Red: contain more red fibers and they are responsible for movement,
which require slow action for a long time e.g antigravity muscles.
• White: contain more white fibers and they are responsible for movement,
which require rapid action for a short time.
3) According to the type of contractile activity:
a. Tonic muscles (stabilizers): it demonstrates continuous low level of
contractile activity which is required to maintain a given posture.
b. Phasic muscle (mobilizers): it demonstrates rapid (fast twitch) activity
which is required when changing from one position to another.
21. 4) According to general limb appearance:
Contractors: those muscles pull the body into approximation of the fetal position
e.g. flexor adductors and medial rotators.
Expanders: those muscles which expand or open up the body
e.g. extensors abductors and lateral rotators.
5) According to the relative magnitude of their stabilizing and
rotatory components (muscle attachments):
Spurt: mainly rotator muscles which have their origin away from the joint and their
insertion near to the joint e.g. biceps muscle.
Shunt: mainly stabilizer muscles which have origin near the joint and their insertion
away from the joint e.g. brachio-radialis.
22. 6) According to the orientation of the line of pull to the joint structure:
( e.g. flexors, extensors, abductors and adductors)
• The muscle located anterior to a joint may be extensor as in the case of the knee joint
or may be flexor as in the case of the elbow joint.
• The possible axes of motion are determined by the structure of the joint itself.
7) According to the number of joints over which the muscle
crosses:
• One joint muscle ( e.g. vastus mediales).
• Two joint muscle( e.g. rectus femoris).
• Multi-joint muscle ( e.g. finger flexors).
23. 8) According to the type of muscle action or function (their interaction
in joint movement):
•
•
One action of the joint is not only the responsibility of one muscle but
it is the responsibility of different groups of muscles, which can be
classified as follows:
Agonists, antagonists, synergists, fixators.
antagonist: This type of muscle acts as opposing muscle to agonists, usually contracting as a means
of returning the limb to its original resting position.
agonist: These muscles are typically associates with the movement itself, and are sometimes
referred to as prime movers. They contract while another muscle relaxes.
synergist: This type of muscle acts around a movable joint to produce motion similar to or in
concert with agonist muscles.
24. Muscles classification according to development
Mesodermal : All skeletal, smooth and cardiac muscles
Ectodermal : Smooth muscle of iris, arrector pili muscle of skin
25. •Types of muscle action
•Agonists •Antagonists •Synergists •Fixators
•Prime movers
•
Secondary movers
•Conjoint
•Stabilizers
•Neutralizers
•
•
Around
The target joint
On another joint •