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Muscular System
The muscular system allows humans to move. Muscles also provide strength, balance and heat.
11,239 Questions
What is the function of the sternocleidomastiod muscle?
The sternocleidomastoid muscle, also known as sternomastoid and comonly abbreviated as SCM, is a paired muscle in the superficial layers of the anterior portion of the neck. It acts to flex and rotate the head.
Contraction mechanism in skeletal muscle cell?
The mechanism by which skeletal muscle tissue obtains ATP to fuel contractions is the sliding - filament hypothesis. Two filaments, actin and myosin, slide over one another during contraction.
Type of muscular tissue that is striated and is the only type under voluntary control?
Skeletal Muscle
BIG TIME NO!!! If the cardiac muscle tires, you will die! It is just like saying if the Heart tires, then so does the cardiac muscle (Which the Heart is made up of).
Remember the Heart pumps from when you were in your mothers womb, till your death. Every other muscle in the body such as hands, legs, arms etc will tire as I'm sure you've already noticed.
The cardiac muscle NEVER tires.
Which sporting activity makes the most useof all the body muscles?
im not sure if you can hv a complete body workout.....................but swimmimg is a good place too start!!
What is nuclei in the skeletal muscle?
Skeletal muscles (the ones in arms, legs and other moving parts of the body) have large numbers of nuclei. They are formed during development by the fusion of many single nucleus myoblastcells . Other muscle cells, like the cardiac muscle cells in the heart or smooth cells in the gut, do not fuse and have only one nucleus. For more information see "Molecular Biology of the Cell" published by Garland Press.
What muscle must contracts to straighten the arm?
When you straighten your arm your bicep is relaxed and your tricep is contracted.
Are smooth muscles under voluntary control?
Smooth muscles are found in blood vessels and in organs (ie the bladder), and is stimulated by the autonomic nervous system, the control system for involuntary reactions. Smooth muscles can also be controlled by hormones, neurotransmitters and other chemicals such as calcium and potassium. Depending on what chemical binds to the muscles receptor sites will change what type of reaction occurs within the muscle itself. For example if you were frightened, your heart would beat faster, you would breathe deeper -- and not because you wanted to do it, but because your body automatically reacted to the stimulus. That is what the autonomic nervous system relies on -- automatic responses.
What condition in which three is diminished tone of the skeletal muscules?
The condition in which there is diminished tone of the skeletal muscle is hypotonia.
What is the difference between pink red and white skeletal muscle?
Red muscle is slow contraction muscle, used in exercise requiring long-time contractions
White muscle is fast contraction muscle, used in fast exercises
Every living person has pink muscle in a certain amount. Pink muscle is a combination of the two other muscles giving you explosive power and stamina. Contrary to scientific belief pink muscle can be built up after extensive workouts with a persons maxed out weight limit.
What is the function of the biceps?
The biceps brachii is the muscle on the front of your upper arm. Its purpose is to pull bend your arm at the elbow (flexion).
It is one of an antagonistic pair of muscles. The other muscle is the triceps brachii on the back of the upper arm. It straightens (extends) your arm at the elbow.
The biceps are used to flex the lower arm up to the upper arm. They also allow the wrists to suppinate.
It helps in flexioning the forearm against the arm
How can you tell if your butt is fat or muscle?
It is going to be fat on top of muscle, on top of pelvis. To find out how thick the fat is, just grab a handful of skin and the fat will be attached to it. To feel the muscle below the skin & fat, just flex the muscles of your bum and you'll feel the muscles contract (imagine someone's about to give you a wedgie and you reflexively contract your whole bum - that's the flex I'm takling about).
What ion is essential for a muscle contraction to occur?
Calcium binding to actin-myosin causes contraction. The calcium is released to the sarcomere from a specialized storage organelle, the sarcoplasmic reticulum.
What does the muscle fiber use energy for?
Sources of ATP include the phosphorylation of ADP by creatine phosphate, anaerobic glycolysis, and oxidative phosphorylation of ADP n the mitochondria.
What is the major anterior upper arm muscle called?
the upper arm is located between the shoulder joint and elbow joint. It contains four muscles - three in the anterior compartment (biceps brachii, brachialis, coracobrachialis), and one in the posterior compartment (triceps brachii). In this article, we shall look at the anatomy of the muscles of the upper arm - their attachments, innervation and actions.
What is the function of the adductors?
The main function of the adductor muscles is to propel the legs towards the midline of the body. The four groups of adductor muscles are adductor longus, adductor brevis, adductor Magnus and gracilis.
What specific event triggers the uncovering of the myosin site on actin?
Calcium ions bind to troponin and change its shape.
What is the function of the deltoid tuberosity?
A tubercle is a small rounded point of a bone. It also refers to a nodule attached to bone, mucous membrane, or skin.
The term "tubercle" is less commonly used to refer to lesions resulting from Mycobacterium tuberculosis infection.
