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Muscular System

The muscular system allows humans to move. Muscles also provide strength, balance and heat.

11,239 Questions

Prime mover of head flexion a two headed muscle?

bi·cepsPronunciation\ˈbī-ˌseps\FunctionnounInflected Form(s)plural biceps also bi·ceps·esEtymologyNew Latin bicipit-, biceps, from Latin, two-headed, from bi- + capit-, caput head - more at headDate1634

: a muscle having two heads: as a: the large flexor muscle of the front of the upper arm b: the large flexor muscle of the back of the upper leg

from Webster : http://www.merriam-Webster.com/dictionary/biceps

What is the agonist and antagonist muscles in a lunge?

Agonist(s) - Gluteus Maximus/Quadriceps Femoris

Synergist(s) - Biceps Femoris (Hamstrings)

Stabilizer(s) - Transversus Abdominis

Antagonist(s) - Hip Flexors (Mainly the Iliopsoas)

Movement(s) - Hip Extension/Knee Extension

Planes - Sagittal Plane

Your agonist(s) (when done properly i.e. sitting back/knees out) for a squat will be your glutes and quadriceps. Your synergist(s) will actually be your hamstrings as the biceps femorislong head assists greatly in hip extension. Your antagonist(opposing muscle) during a squat will be your Hip flexors i.e. Hip flexion.

What was the effect of mental distraction on your ability to produce the patellar reflex?

It increases the reflex action.

"Because of the complexity of the nervous system and the large number of stimuli constantly impinging on the body, the activity of neural networks in one part of the nervous system often modifies another. This is the case for reflexes, such as the knee jerk.

The magnitude of the knee jerk is greater when the contractile tone in the extensor muscle is higher. Conditions that increase muscle tone, such as mental excitement increase the extent of the knee jerk.

A decrease in mental excitement (sleep, a restful state, etc.) is associated with a decrease in the reflex. The strength of the "tap" required to evoke the reflex is higher after physical or mental work. The knee jerk may be reinforced by a second stimulus, such as a loud noise when the noise is appropriately timed with respect to the tapping of the tendon."

http://www.the-aps.org/education/lot/pdfs/neurnetworks03.pdf

What causes muscles to contract on one side of body only?

well , total paralysis on one side of body is called hemiplegia...... where as weakness is called paraplegia..... these may be due to damage at the brain or spinal cord...

What part of the human body has the most muscles in it?

The heart muscles are the most active at an average of 60-70 beats per minute for your entire life.

What causes sore bicep muscles?

Exercise

Heavy lifting, too much exercise, trauma, torn muscle may all cause sore biceps. People who are on Statin tablets for high cholesterol, can develop inflammation of the muscles myositis due to side effects of the drug.

Why is your butt hurting?

because your brother/wife/sister has just kicked you between the legs and your small collection of dangly objects within your trousers has receive immense pain, thus making the phrase ring true = 'why do MY bollocks hurt?'

3 types of connective tissue wrapping skeletal muscle?

There is only one type called fascia. It has different names depending on its location. The three are: endomysium, perimysium, and epimysium.

How do nerves affect the muscles?

Nerves affect the muscles because the brain sends out an impulse which goes down the spine and through the body to what ever part of the body it wants to reach and then the impulse is transmitted to a motor neuron and the motor neuron tells a muscle or a gland to contract or excreta some liquid like the saliva glands when you smell food in the air.

What type of muscle are the biceps?

Skeletal - Skeletal muscle is the muscle that is attached to the skeleton across joints. It is under voluntary control as we decide when to contract them and produce movement. Skeletal muscle is arranged in rows of fibres and is also called striated, or striped, due to its appearance. The co-ordinated contractions of skeletal muscles allow us to move smoothly and produce sports skills. There are over 700 skeletal muscles in the human body and they make up around 40% of our bodyweight. Skeletal muscle is responsible for the following functions:

-Producing movement

-Maintaining body posture

-Generating heat to keep us warm

-Storage of glycogen for energy

What surrounds myofibrils?

The sarcoplasmic reticulum are the membranous interconnecting channels and sacs that surround and run parallel to the myofibrils.

How are the skeletal system the muscular system and the nervous system connected to each other?

Skeletal system provides the support and shape to the body. It works as a base that muscles attach to using tendons. Muscles contract and relax in order to move the body.

What makes your muscle move?

Muscles are connected to bone by tendons. When sacromeres inside a muscle contract it makes the muscles contract thus pulling on the tendon which in turn pulls on a bone to make it contract or also pull that contracted limb to a relaxed position. Transition in smooth muscle contraction also moves food through the intestines and esophagus.

this is no help at all

What happens to the muscles of your upper arm when you lower the lower arm?

i think that the upper arm is gonna be workinq but in the bottom is gonna be in rest.


( Different Person) Your upper muscles, also known as the biceps, will contract, also known as swell up, while your lower muscles, also known as triceps, will relax. when you straighten your arm the muscles reverse.

you are so stupid y would you even put answers out like that? man you whack

How does the shape of a cardiac muscle help it do its job?

because of it's shape the skeletal muscle can contract much easier.

Do your muscles run low on oxygen?

Yes. When your muscles don't get enough oxygen they must obtain oxygen through a process called lactic acid fermentation. The lactic acid that forms as a result causes a burning sensation.

Do women have greater leg strength than men?

Physically, not as a rule. Men tend to be larger and more muscular than the average woman. There could be exceptions though.

Emotionally, hard to say. Men stereotypically do not share their feelings as easily as women. This isn't to say that they don't share at all. In fact it is usually quite easy to read a man's emotions from his actions. If he is grumpy, he may be sad or something is bothering him. If he is touchy, he is mad or wants to be left alone. Then again, if the woman with him loves him, she would know what is wrong, and he shouldn't have to tell her. (Sort of a two way street)

What is a sheet of muscle that helps us breathe and it is situated just under the ribs and lungs?

The dome-shaped sheet of muscle beneath the lungs is called the diaphragm. When you inhale it contracts to become flat, creating a pressure vacuum. Contrary to popular belief, you actually suck air into your lungs via a steep pressure gradient.
it is the diaphragm