The Muscular System

http://sparkcharts.sparknotes.com/health/generalanatomy/section13.php

Producing motion in the human bodyProviding stabilityMaking heatDigestion circulationEnsures blood flow

Functions of the Muscular System

Skeletal muscles consist of densely packed groups of elongated cells called fascicles, that are held together by connective tissues

The general structure of a muscle fiber include myofibrils, which are composed of two kinds of filaments

Thin -Protein actin Thick- Protein mysosin

The Structure of a Muscle

Diagram of a muscle

http://www.sport-fitness-advisor.com/muscle-anatomy.html

Three types of muscle tissuesSkeletal~ stripped appearance

EX: cleitoids, abdominalsSmooth ~ round, in the digestive track

EX: uterus, bladder, blood vesselsCardiac ~ round only on the heart

EX: heart

http://www.clccharter.org/donna/medschool/systems/system%20research/muscular/Muscular%20System/Muscular%20Facts.html

Muscle FatigueIs the physiological inability of a muscle to contract

Causes:

~Lack of oxygen to the muscle,

~Lack of ATP when exerting energy

~ Large accumulation to lactate

http://fastatforty.blogspot.com/2011/09/guest-blog-jonathan-toker-on-muscle.html

Effects of exercise on skeletal muscle

Regular exercise can increase muscle size , strength , endurance

Lowers children's risk of chronic pain in their future

Causes soreness

http://www.clccharter.org/donna/medschool/systems/system%20research/muscular/Muscular%20System/Muscular%20Facts.html

Interactions of Flexors and Extensors Flexor~ decreases angle between

two bones Extensor~ increases angle

between two bones Ligaments ~ connects bone to

bone Tendons ~connects muscle to

bonehttp://biology.clc.uc.edu/courses/bio105/muscles.htm

Connective tissues Loose connective~ fibers & many cell

types in gelatinous matrix, found in skin, & surrounding blood vessels, nerves, and organs.

Dense connectives~ bundles of parallel collagen fibers& fibroblasts, found in tendons& ligaments.

Cartilage ~Cartilage is made of collagen & elastin fibers embedded in a matrix glycoprotein & cells called chondrocytes, which was found in small spaces.

http://www.hartnell.edu/faculty/aedens/Bio6L/Bio6Lconnective.html

Function of Tendons Tendons connect muscle to

boneAlso, carry tensile forces from

muscle to bone They carry compressive forces

when wrapped around bone like a pulley

Contain: collagen fibrils, fibroblasts etc. http://www.bhpain.com/bursitis_tendonitis

Role of the diaphragm The diaphragm, located below the lungs,

is the major muscle of respiration.  Upon inhalation, the diaphragm

contracts and flattens and the chest cavity enlarges.

Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.

http://pennstatehershey.adam.com/content.aspx?productId=28&pid=28&gid=000141

Disorder of the muscleMuscle dystrophy is a group of

inherited muscles diseases in which muscle fibers are unusually susceptible to damage

In the late stages of muscle dystrophy fat, connective tissues, often replace muscle fibers and other organs

Symptoms: muscle weakness ,apparent lack of coordination.

http://www.beltina.org/health-dictionary/muscular-dystrophy-symptoms-treatment.html

Biology.clc.uc.edu/courses/bio105/muscles.htmwww.shsu.edu./~bio-mlt/chapter10.htmlwww.unp.me/muscularsystemshs.wesport.k12.ct.us/anatomy.htmlwww.mayfieldclinic.com/PE-AnatSpine.htmwww.bing.com/health/article/mayo-MADS00200/Muscular-clystrophy?a=muiscular+dystrophy&pah=muscular+dystrophyHolt Moden Biology Textbook

Bibliography

Bibliography http://www.biology-online.org/dictionary/Muscle_fatigue

http://www.clccharter.org/donna/medschool/systems/system%20research/muscular/Muscular%20System/Muscular%20Facts.html

http://www.bbc.co.uk/science/humanbody/body/factfiles/skeletalsmoothandcardiac/heart_beat.shtml

http://www.beltina.org/health-dictionary/muscular-dystrophy-symptoms-treatment.html

http://www.rapidlearningcenter.com/biology/anatomy-physiology/04-Tissues-of-the-Human-Body.html

http://www.rapidlearningcenter.com/biology/anatomy-physiology/04-Tissues-of-the-Human-Body.html

http://www.engin.umich.edu/class/bme456/ligten/ligten.htm