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Muscular System
The muscular system allows humans to move. Muscles also provide strength, balance and heat.
11,239 Questions
Is the tongue the longest muscle in the human body?
No. The sartorius muscle is the longest in the human body. The tongue, often quoted as the 'strongest' muscle, actually comprises 16 different muscles.
Does the muscular system work independently with another system?
One way the endocrine system works with the muscles is through the release of glucose. When your muscles need energy, a signal will be sent to your brain to release more insulin from your pancreas, which will create more energy to be available for use. Glycogen will be pumped out by your liver if you are in need of energy stores. Also read more about the fight or flight response.
Why is it important to strengthen the often weak unused muscles of the back posterior of the body?
Without a good ciculatory "pump" brought to the area by a workout, the ligaments between the vertebrae in the back will deteriorate and weaken, until the individual is too weak and in pain to walk anymore.
What is the fate of any lactic acid produced in the muscles?
Once sufficient oxygen is restored, the lactic acid produced via anaerobic glycolysis can be utilized for energy or reconverted into glucose by the liver and other tissues (a process known as oxidation).
What is actin and myocin in muscle?
Actin and myosin are two crucial proteins that play a vital role in muscle contraction. Actin is a thin filament that provides structural support and serves as a track for myosin, which is a thicker filament that interacts with actin to generate force. When muscle fibers receive a signal to contract, myosin heads attach to actin filaments and pull them inward, causing the muscle to shorten and generate movement. This interaction is fundamental to the functioning of both skeletal and cardiac muscles.
The rectus abdominis is the muscle group that you see rippling on the abdomen of some athletes. They are also referred to as the abs or lower abs.
What is the difference between a muscle and a tendon?
Muscles,tendons,and bones are related because tendons connect muscle to bone and ligaments connect bone to bone.Tendons connect your muscles to your skeleton so that your muscles will make the bones move to were you need it to go.
How do I make my bent penis straight as one side of the muscle remains unhard?
If it is bending very badly or causing pain on erection then you can have surgery on it to releave it somewhat. You will need to visit your doctor and ask for a referal to a specialist for any treatment though. It is usually scar tissue that causes the bending.
Some penises bend naturally to the side or upwards slightly and as long as no pain is felt should be left alone.
What muscle actions would be classified as an isometric contraction?
1. We can isometrically contract any skeletal muscle of our body. We can contract just one skeletal muscle of the body without contracting any other.
However, we should be masters of Original Meditation to be able to put the small muscles of the head into pure isometric contraction. These are muscles of face, muscles within the oral cavity, muscles in front of the neck, those around eye ball and those in the middle ear.
2. We can Isometrically contract and relax all the skeletal muscles of the body as a single unit.
Why do lungs have no muscle built in them?
Lungs do not need to contain muscle tissue because their function is to exchange gases (oxygen and carbon dioxide). The diaphragm is a muscle just under your ribs that contracts and relaxes to expand and deflate the chest cavity.
As the diaphragm does its job, air floods into the lungs (which are more or less bags of tissue). The reason the air floods into the lungs has to do with air pressure and the tendency of molecules to move to places where they will be less crowded.
What chemical ion is responsible for initiating the contraction of a muscle fiber?
Calcium ions bind to the thin filament ( actin ), turn it and expose the binding site to the thick filament (myosin ).
What are two kinds of muscle involved wth breathing?
There are four sets of muscles that control the respiratory system:
- The Diaphragm
- The Intercostal Muscles
- The Abdominal Muscles, and
- The Accessory Muscles
What is the cell in muscles that receives messages from motor neurons?
There is a special cell in our body that is part of the nervous system. It receives messages in the muscles sent from the motor neurons in our brain. These cells are called effectors.
What is the function of troponin in muscle contractions?
It is involved in the regulation of the contraction of a cross-striated muscle.
Creatine phosphate, oxidative phosphorylation, and glycolysis.
Why do I keep pulling leg muscles?
Becuase its ripping the tissue of the muscle. imagine that in your leg. it doesnt sound fun
What is basic unit of a muscle?
sarcomeres
Sarcomere
Sarcomeres
The functional unit of a skeletal muscle is called a sarcomere.
Hole's Anatomy 12th edition, pg 287 states: "Muscle fibers, and in a way muscles themselves, are basically collections of sarcomeres, discussed later in this chapter as the functional units of muscle contraction."
sarcomere.
What condition is caused when muscles waste away because of neglect?
Atrophy
actually that would be atrophy...
How does the nerve impulse cause contraction of the muscle?
The nerve impulse causes the release of acetylcholine from the motor end plate. This causes the depolarization of the membrane of the adjacent muscle cell. Depolarization triggers the release of calcium ions from the sarcoplasmic reticulum inside the muscle cell. In the presence of ATP, the high calcium level causes the myosin heads to bend, dragging actin filaments towards the middle of the unit of contraction.
When a muscle contracts what does it pull on?
A muscle pull happens when muscles are overworked or over stretched
Where is the rotator cuff located?
It is the bone at the top of your shoulder. Where the arm meets the torso.
To be a little more specific, the rotator cuff is not a bone, but actually four muscles (the Teres Minor, the Infraspinatus, the Supraspinatus and the Subscapularis if you want to know specifics) that get their name because they help rotate the arm and provide stability for the shoulder.
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Dr. B.
