Muscular System

It contains some fat, but is mainly constructed of the mammary glands and connective tissue.

The diaphragm relaxes to help squeeze the air out of your lungs. When the diaphragm contracts, it flattens and pulls air into your lungs. When it relaxes into its dome-shaped position, air is pushed out.

if your reading this your so stuuupid. never use wikianswers! if read anymore answer on here its probably messed up by me.

1. i am not sure but it might have something to do with your triceps and biceps

The hamstring muscles biceps,femoris,semitendinosus,semimembranosus between the hip and knee joints flex inward ,rotate during development stretching exercises.

The myosin head pivots, moving the actin strand.

The proteins that form the visible striations in skeletal and cardiac muscle are not organized the same way in smooth muscle. It contacts in a similar way but much more slowly and in waves. Some of the proteins are different ones but still produce movement.

Its antagonists are the trapezius and the two rhomboid muscles.

genioglossus, geniohyoid, omohyoid, digastric anterior belly, hyoglossus

Cardiac muscles are involuntary. Cardiac muscles are what makes the heart pump. Cardiac muscles are only in your heart. If those muscles were voluntary, organisms would most likely die.

Skeletal muscles are voluntary. You can move any part of your body freely with these muscles, unless you are paralized in which your skeletal muscles are damaged, the nerve cells from those muscles to the spine are damaged, or the spine itself is damaged. Skeletal muscles are found in all of the body. In an average person, skeletal muscles make up 40% of body weight.

So:: Cardiac muscles are INVOLUNTATY

Skeletal muscles are VOLUNTARY

Skeletal muscles are arranged as opposing pairs because, although they can shorten themselves by contracting, they have to be stretched back to their former length by other muscles. An example of opposing muscles is in the arm, where the biceps and triceps have opposite actions. As one muscle shortens, the other is stretched. The biceps contracts to bend the arm at the elbow while the triceps stretches. To straighten the elbow joint, the triceps contracts, while the biceps stretches.

=helps straighten your knees==-useful in climbing stairs=

Muscle fibres contain two myofilaments called actin and myosin

cycloplegia

Muscle attaches to a non-moving bone at the muscle's origin.

An agonist (prime mover)

Involuntary muscle movement includes peristalsis in the GI tract and the beating of your heart. Generally involuntary muscles are smooth muscles (intestines, blood vessels), but the cardiac muscles are sometimes categorized as striated due to their structural similarities to skeletal muscles.

abduction of the shoulder- crucifix on the rings in gymnastics

adduction of the shoulder- second half of a star jump?

The leading hypothesis for delayed onset muscle soreness are the:

connective tissue damage hypothesis

the skeletal muscle damage hypothesis

the spasm hypothesis

Arms, legs, hands, feet, face... Anywhere where you can voluntarily move. And involuntary muscle is one that is moved automatically and unconsciously (i.e. you don't have to think about moving them) by a part of the brain, like your heart or digestive system. Your lungs are an example of both: they breath automatically, but you can also control them.

Involuntary muscles (such as the heart, the sphincters, etc.) are traditionally smooth muscle.

perimysium

A catchy phrase for the muscular system should be memorable as well as conveying the message you want to be remembered. An example is 'Muscles: Long and Strong.'

No, cardiac muscle cells are branched but skeletal muscle cells are linear and do not branch

NO, You misunderstand the definitions. A sprain affects a joint and a strain affects a muscle E.G. I sprained my ankle and strained my calf. NO, You misunderstand the definitions. A sprain affects a joint and a strain affects a muscle E.G. I sprained my ankle and strained my calf.