Muscular System

Pectoralis Minor

There are 4 curvatures of the spine: cervical,thoracic, lumbar, and sacral. During embryogenesis the spine is all curved in one direction, like the letter C with your feet and head next to each other. A cervical and lumbar curvatures are formed and the other two, sacral and thoracic, occur just as a continuation of the curvature that existed before. The cervical curvature exists so that our heads can be upright as opposed to pointing to the floor. The lumbar curvature occurs so that we can stand upright and walk on two legs. This curvature allows the weight of the body to placed directly downwards on the sacral spine. Hope that helps

Muscles are made up of "excitable cells" which can contract. Visceral muscle is smooth muscle--one of three types of muscles in the body. Visceral muscle is found in the body in places like the arteries, bladder, the digestive tract and many other muscles which need to contract in order to perform their job.

Well, your body always has some kind of energy. If you eat, then it can use the food for energy for quite a while. If that runs out because you haven't eaten for a long time, then your body will start using fat for energy. If that runs out, then it will start using muscle (which is very bad, since your heart is a muscle). If you are very low on immediately available energy, your body will react by making you feel tired, so that it has time to convert more energy while your body sleeps.

shoulder: deltoid. Chest: Pectoralis major

your rectus abdominis is the prime mover in a crunch exercise or spinal flexion

Skeletal muscle is the type attached to bones.

It depends on the part of the body you are working.

what is the largst muscle in the muscular system

The gluteus maximus, or buttocks, can be targeted specifically by a few exercises. The one-leg squat, and one-leg deadlift, both trigger 59% electromyographic activation in the gluteus maximus muscle group. The sideways, front, and transverse lunges will trigger between 41% and 49% activation, but can still be quite beneficial.

The best way to keep your muscles and bones healthy is to eat right, and to exercise. Eating carbs and proteins is good energy to fuel your muscles. Exercising can strengthen your muscles and your heart and keep a steady blood flow! The best way to keep your muscles and bones healthy is to eat right, and to exercise. Eating carbs and proteins is good energy to fuel your muscles. Exercising can strengthen your muscles and your heart and keep a steady blood flow!

do Epimysium surround an entire muscle

cardiac muscle. a type of cardiac muscle is the papillary muscles attach to the lower portion of the interior wall of the ventricles. They connect to the chordae tendineae, which attach to the tricuspid valve in the right ventricle and the mitral valve in the left ventricle. The contraction of the papillary muscles opens these valves. When the papillary muscles relax, the valves close.

sacromere

The two filaments involved are myosin and actin.

Actin: is the framework and slides over the myosin filament when the muscle is shortened.

myosin: is a thick filament

Also a sacromere: is made up of the actin and myosin. It is the functional unit of a muscle fibre and extends from z line to z line.

A muscle contraction: is many sacromeres shortening ( actin sliding over myosin)

Back

The serratus anterior is one, and the lower trapezius muscles are the others. The SA muscles pull the scapulae downward and anteriorly while the lower traps pull downward and medially.

I play for a semi-professional rugby team. Needless to say I’ve got pretty strong arms. I play prop and am at 6’4 and 330 lbs.

cardiac muscle

interventricular septum

Congenital myopathies are a group of myopathies, usually present from birth, that display structural changes in the skeletal muscles. The list of diseases defined as congenital myopathies varies.

your deltoids is the muscle in your shoulder that you use in just about EVERY Olympic sport! it is essential to the human body

diaphragm

Pronation of the forearm and the flexion of the elbow

Any muscle you can control like your arm (you can control most of the muscles in your body). Any muscle you can't control is an involuntary muscle. The only one i can think of is a penis.