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Muscular System
The muscular system allows humans to move. Muscles also provide strength, balance and heat.
11,239 Questions
What controls the amount of light that enters the eye?
The pupil contracts or expands (dilates) to regulate the entry of light to the retina in the eye.
The iris or colored part of the eye is what controls the diameter of the pupil by covering or uncovering it.
What are the pelvix floor muscles?
The pelvic floor muscles in the body support the bladder, uterus, and bowels.
What happens to the biceps when muscle contracts?
When a bicep contracts it pulls on tendons causing the arm to bend at the elbow.
Is the sternocleidomastoid muscle siperior or inferior to the rectus abdominis muscle?
Sternomastoid, lying in the neck, is well superior to rectus abdominis which lies in the anterior abdominal wall.
What is the type of fermentation used by human muscles in low oxygen conditions?
Human muscle cells undergo lactic acid fermentation in low oxygen conditions.
What is the tendon attached to the heel and calf called?
There are many muscles that attach to the calcaneus, but the two biggest ones are the gastrocnemius and soleus. These two muscles attach to the calcaneus, via the achilles tendon. The other muscles are: the foot intrinsic muscles, so they begin and end only in the foot, and the plantaris, which attaches to the femur, and travels down to the calcaneus.
Group of muscles that move limbs towards the body?
Adductors are the group of muscle the move limbs toward the body
By Adam Safi
What are the effector muscles involved in a knee-jerk?
Gastrocnemius muscles is the effector.
Afferent Nerve- Sciatic
Efferent Nerve- Sacral 1 & 2 Nerve roots
Receptors- Tendon nociceptors in Tendon of Achilles
Integration centers- Interneurons in the spinal cord
Muscle attached only at one end?
The tongue, there is also suppose to be another tiny one but I cannot remember it.
What are two kinds of muscle tissues?
Two types of muscle in the human body are striated muscle. Striated means "striped" and is the type of muscle that moves the body. Smooth muscle does not have the striped appearance and is not under conscious control.
What muscle is used to blink and squint?
There are multiple muscles that control reflexes of blinking. The main muscles, in the upper eyelid, that control the opening and closing are the orbicularis oculi and levator palpebrae superioris muscle. The orbicularis oculi closes the eye, while the relaxation and contraction of the levator palpebrae muscle opens the eye.
The superior palpebral muscle, in the upper eyelid and the inferior palpebral muscle in the lower eyelid are responsible for widening the eyes. These muscles are not only imperative in blinking, but they are also important in many other functions such as squinting and winking. The inferior palpebral muscle is coordinated with the inferior rectus to pull down the lower lid when one looks down.
As for squinting, I'm really not sure. Maybe someone else could enlighten us both on the matter! I really hope this helps you though.
- Newbsauce
What muscles are used in forearm flexion?
Biceps Brachii is a powerful supinator of the forearm, the Supinator muscle also completes supination of the forearm particularly when the forearm is supinating in a slow and unopposed manor or if the forearm is extended.
What is the action of the biceps brachii?
-Flexion of the Arm -Flexion of the Forearm
-Supination of the Forearm
-Stabilization of the glenohumeral joint
Where is the rhomboid muscle located?
The rhomboid muscles, often simply called the rhomboids, are rhombus-shaped muscles associated with the scapula and are chiefly responsible for its retraction. There are two rhomboid muscles: Rhomboid major muscle and Rhomboid minor muscle. They are located on the back that connects the scapula with the vertebrae of the spinal column.
How do muscles cause your chest to move when you breath?
When you breathe your chest rises and falls with each breath because under you rib cage is the diaphram that expands causing your chest to rise with each breath you take in and when you exhale your chest falls because your diaphram is pushing the air out.
aba, chest, shoulder legs, and back. no jaw muscle involved
The type of burn you're referring to is a 3rd degree burn, the worst kind. Skin is burnt and charred and needs to be replaced, and the flesh is burned down to muscle tissue.
(This can also be referred to as a fourth-degree or "full thickness" burn.)
First Degree burns are usually red skin with some blisters, while 2nd Degree burns are more serious, resulting in burning of the outer skin layer and some subsequent skin layers, but the skin isn't charred and can grow back without a graft.
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This could be a close range gunshot wound. The lacerated muscle mass at the center surrounded by the charring area (perhaps also containing smoke powder) points towards a gunshot injury. Burn wise, this is obviously a thermal burn.
Why does an increase in the number of myofibrils increase muscle fiber size?
Research has found that the number of muscle fibers in the bundles that comprise each muscle group are set by genetics and cannot be increased. What can be increased is the size of the cells in these fibers, which is the goal of strength training.
When you bend your arms what happen to your biceps and triceps?
When your arm is bent, your biceps flex and your triceps relax. When your arm is straight, your biceps relax and your triceps flex. This opposing set of muscles allows you to push and pull things efficiently.
Is your tongue the strongest mussle in your body?
Your tongue on the other hand can apply different amounts of force in multiple applications.
However all of this is a myth as the tongue is not the strongest muscle in the body. The masseter is.
