Muscular System

Your lungs.

There are various types of muscles in the body. Voluntary, which allow us to move around and do coordinated tasks. Involuntary such as the muscles in the intestines which work without conscious effort and move food through the gut , and cardiac; a special type of muscle found only within the heart and which possesses the property of automaticity, or in other words can cause itself to contract. Muscles also help with the circulation of the blood by " massaging the veins" thus helping the blood to return to the heart.

It means the ability to use volutary musckes as many times without becomingtired or worn out

there are two muscles in your lower leg: one in the front of the bone and one in the back. they are connected by tendons. if you want your leg to be straight, the front muscle contracts while the back relaxes. it the opposite if you want your leg bent

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Microscopic anatomy: skeletal muscle is made up of long, cylindrical striated cells with multiple nuclei; cardiac muscles are uninucleated, striated, and branch out; smooth muscle lacks striations and has uninucleated cells.

Body location: skeletal muscles are attached to bones or skin; cardiac muscle is located in the walls of the heart; smooth muscle is found in hollow visceral organs.

Functions in body: skeletal muscle is voluntary and is responsible for most visible human body movement, e.g. movement of limbs; cardiac muscle is involuntary and regulates pulse and pumps blood; smooth muscle is involuntary and functions in conjunction with the nervous system and hormone and chemical production.

Your hip flexor hurts

A muscle insertion is the end of a muscle attached to the free-moving bone of its joint. A muscle origin is the end of the muscle attached to the relatively fixed bone of the joint.

Extensor muscles open a joint and are the opposite to flexor muscles, which close it. I imagine triceps are extensor, while biceps are flexor.

Involuntary Muscle

Immerse yourself medical language, page 431:

"Smooth muscles are involuntary, nonstriated muscles."

chewing

because its attach to the bones movement is a shorten shorten contrast

Of all the muscles contracting simulataneously, the one that is mainly responsible for producing a particular movement is called the prime mover for that movement. The other muscles that help in producing the movement are called synergists. As prime movers and synergists muscles at a joint contract, other muscles, called antagonist muscles, relax.When antagonist muscles contract, they produce a movement opposite to that of the prime movers and their synergist muscles.

-- I wrote kind of alot so you can under stand it just in case if you don't :)

Frogs have the same muscles as humans, but some muscles are developed differently than others. They do not have very powerful arms, but the jaw and leg muscles are strong. They also have very flexible tendons so they can leap long distances.

Peristalsis

acetylcholine (ACh)

helps the embryo through the three stages, it holds it and attaches the placenta(umbilical cord).

The diaphragm is a sheet of internal skeletal muscle. when relaxed it's domed shaped smooth muscle. upon contraction it reduces in length hence pulling inward which then increases the lung volume creating a negative pressure relative to the aveoli. This ensures that proper gas exchange occurs. Now when the diaphragm relaxes, it returns back into is dome shape ( longer in length) and pushes upward thereby reduces the lungs volume and increasing the pressure relative to the surrounding thus you exhale.

Another simple way to approach it is by playing around with PV=nRT in your head if you must.

Electromyography

An arrhythmia is an irregular heartbeat, which divides into two categories - tachycardia in which an adult's heartbeat averages above 100 beats per minute, and bradycardia - in which an adult's heartbeat averages below 60 beats per minute.

The main muscle that helps us to breathe is the diaphragm. When it contracts it creates a lower pressure area inside the lungs than is in the outside air, and this basically sucks air into the lungs. The lungs exhale through their own natural recoil.

Hello,

I see you are asking "What are the symptoms for rotator cuff disease? "Symptoms of a rotator cuff disorder include pain and weakness in the shoulder. Most often, the pain is on the side and front of the upper arm and shoulder. It may hurt or be impossible to do everyday things, such as comb your hair, tuck in your shirt, or reach for something.

orthopedicshealth. com/condition/rotator-cuff-disease/c/37114

if u did not have muscle, u would not be asking this q, because u would be DEAD

You see, without muscle, you would have no ability to move, and therefore wouldn't even be here right now, because the first humans wouldn't have had the ability to reproduce. they would have just lied around like rag-dolls. Muscles and only muscles are what makes the body move, human or animal. And your heart is muscle there for you would not have oxygen or blood around your body.

The ciliary muscles are sphincter muscle that controls the thickness of the lens. Each eye has a ciliary muscle around the lens of the eye. When the muscle contracts the lens gets compressed, and therefore thicker, meaning that it refracts light more (and shortens the focal distance). When it relaxes the reverse is true.

They are innervated by parasympathetic fibres originating in the occulomotor nucelus of the midbrain which travel (along with somatic fibres to the extrinsic muscles of the eye) along the occulomotor nerve (cranial nerve III). okkk