Muscular System

A neurotransmitter that causes muscle movement is called Acetylcholine. Acetycholine acts as on both the central nervous system and the peripheral nervous system.

leg muscles lungs heart abdomen etc

Muscle attaches to tendons which then attach to bone. "attachments" occur as smooth transitions from muscle to tendon, so that there is no precise discontinuity between what is called muscle and what is called the tendon.

if you're on OdysseyWare your answer would be

Active stretching.............. =)

The muscular system requires significant attention to work at optimum conditions. Regular activity coupled with adequate sleep and a healthy balanced diet should keep all systems in great operating order.

During passive breathing the diaphragm moves down for inhalation this pushes the organs of the abdomen down and so pushes the rectus abdominus out, this is why you see your abdomen moving. To assist exhalation the rectus abbominus then contracts pushing the organs back in and so pushing hte diaphrag pack up.

There are things called neurons that have parts called dendrites and axons. The dendrites of a neuron are branching, tubelike extensions of the cell body that form a pattern resembling the limbs of a tree. Most neuron cell bodies have about six main dendrites, each of which is two or three times as thick as the axon of the cell. The distance between the cell body and the tips of the dendrites is about 0.5 millimetre. Dendrites are specialized structures for receiving impulses they are like mailboxes, mostly from the axon of another neuron. Dendrites and axons do not quite touch each other. In almost all cases, they are separated by an extremely narrow space called the synaptic cleft, over which nerve impulses are transmitted. These places where one neuron communicates with another are called synapses.The axon, also called the nerve fibre, is a tubelike extension of a neuron cell body. The axon is specialized to carry messages. An axon of one neuron may have enough branches to make contact with as many as 1,000 other neurons. Most axons in the central nervous system are less than 1 millimetre long. However, many axons in the peripheral nervous system are longer, and some are much longer. For example, the axons that extend from the spinal cord to the muscles in the feet may be 75 to 100 centimetres long. The structures commonly called nerves are actually bundles of axons lying next to one another in a cordlike formation. Nerves can be made up of the axons of motor neurons or sensory neurons, or of both. Some axons are covered by a sheath of a white, fatty substance called myelin. The myelin increases the speed of impulses along the axons. Myelin also causes the distinction between the grey matter and white matter in the nervous system. Grey matter consists largely of unmyelinated axons (axons without myelin sheaths) and neuron cell bodies. White matter is made up mostly of axons that have white sheaths of myelin. Myelin is formed in the peripheral nervous system by Schwann cells, which are special supporting cells that surround the axons. In the central nervous system, supporting cells called glia produce myelin.There are things called neurons that have parts called dendrites and axons. The dendrites of a neuron are branching, tubelike extensions of the cell body that form a pattern resembling the limbs of a tree. Most neuron cell bodies have about six main dendrites, each of which is two or three times as thick as the axon of the cell. The distance between the cell body and the tips of the dendrites is about 0.5 millimetre. Dendrites are specialized structures for receiving impulses they are like mailboxes, mostly from the axon of another neuron. Dendrites and axons do not quite touch each other. In almost all cases, they are separated by an extremely narrow space called the synaptic cleft, over which nerve impulses are transmitted. These places where one neuron communicates with another are called synapses.The axon, also called the nerve fibre, is a tubelike extension of a neuron cell body. The axon is specialized to carry messages. An axon of one neuron may have enough branches to make contact with as many as 1,000 other neurons. Most axons in the central nervous system are less than 1 millimetre long. However, many axons in the peripheral nervous system are longer, and some are much longer. For example, the axons that extend from the spinal cord to the muscles in the feet may be 75 to 100 centimetres long. The structures commonly called nerves are actually bundles of axons lying next to one another in a cordlike formation. Nerves can be made up of the axons of motor neurons or sensory neurons, or of both. Some axons are covered by a sheath of a white, fatty substance called myelin. The myelin increases the speed of impulses along the axons. Myelin also causes the distinction between the grey matter and white matter in the nervous system. Grey matter consists largely of unmyelinated axons (axons without myelin sheaths) and neuron cell bodies. White matter is made up mostly of axons that have white sheaths of myelin. Myelin is formed in the peripheral nervous system by Schwann cells, which are special supporting cells that surround the axons. In the central nervous system, supporting cells called glia produce myelin.

a game controller

The subscapularis muscle medially rotates the scapula. The muscle is innervated by the upper and lower subscapular nerves.

The part of the brain that regulates balance is the cerebellum ( found on in the hind brain which is located right on top of the spinal cord).

The cerebellum looks wrinkled and also controls:

- limb movement

-muscle tone and coordination

Both of which are important to balance.

Much of the semimembranosus lies deep to the semitendinosus.

All muscles cause movement due to the contraction of coupled muscle cells. Perhaps the question intended to inquire about muscles that cause a bending in which the joint angle decreases. Muscles of this type are called flexor muscles (biceps for example).

a general network of fascia

The "middle" part of a muscle is the muscle belly. For instance, the peak of the biceps is the belly of that muscle - it is the part of the biceps musculotendinous unit that can be contracted, as in "make a muscle" when flexing the biceps.

Musculotendinous unit: A muscle is anchored at both ends, usually by tendons, so that when a muscle is flexed or shortened concentrically, the muscle fibers pull closer together and the tendons pull on the bones that they are attached to, closing the joint angle that the muscle affects - in this case, bringing the forearm closer to the upper arm, decreasing the joint angle at the elbow.

The upper jaw is attached to the skull and therefore can not move. It is the lower jaw that is able to move. Several muscles are involved, sometimes working together to cause the desired movement. The jaw can move in primarily three motions, down or open, up or closed, and laterally to the right or left. The muscles used to close the jaw are primarily the two Masseters, the two Medial Pterygoids, and the two Temporalis muscles. The Lateral Pterygiod muscles work with the Medial Pterygoid muscles on the same side to move the jaw laterally to the right or left, and if both Lateral Pterygoid muscles are contracted simultaneously, the lower jaw slides forward protruding the chin. The anterior fibers of the Temporalis also help in protruding the jaw and it's posterior fibers pull it back. Opening the jaw is a bit more complicated. The primary muscles used are the Digastric muscles. What complicates the situation is that they pull off the hyoid bone. The hyoid bone is stabilized by the Sternohyoid, Stylohyoid, Omohyoid, Thyrohyoid, and Mylohyoid muscle pairs. Without stabilization of the hyoid bone, the Digastric muscles could not work, so, indirectly they are involved in opening the lower jaw. When opening really wide, the Lateral Pterygoids pull the jaw forward in addition to the rotation caused by the Digastrics.

Nicotien or anything chemical which stimulates the Nicotinic receptors.

Every muscle (no matter which muscle, even a single muscle fibre-unit) have several motor neurons.

The biceps flexes the arm it does not extend it (straightens). The triceps brachii extends the arm. They do work together. If one is damaged and doesn't work as it should, the movement will be "jerky" and not smooth.

Mitochondria as the heart requires a lot of energy.

Fibromyalgia.

Iliopsoas, Pectineus, Tensor fasciae latae, Adductor brevis, Sartorius

Those would be the voluntary muscles, or the skeletal muscles

supraspinatus, infraspinatus, subscapularis, teres minor