Chapter 7:5 Muscle System
Terms in this set (39)
Ability to respond to a stimulus
Ability to be stretched
Ability to be short and thick
Ability to return to its original shape
List three main kinds of muscles
- smooth muscle
- skeletal muscle
- cardiac muscle
What is the main function of smooth muscle?
Contract to cause movement in the internal organ
What is the main function of skeletal muscle?
What is the main function of cardiac muscle?
Forms wall of the heart and contracts to circulate blood
What are involuntary muscles?
Actions without having to think
What are voluntary muscles?
Actions controlled by person
list four functions of skeletal muscle
-attach bone to provide voluntary movement
- produce heat and energy for body
- help maintain posture by holding the body erect
- protect internal organs
Name two ways skeletal muscles attach to bones
By tendons or facias
Decreasing the angle between two bones
Swinging the arm around in a circle
Moving a body part toward the midline
Straightening the lower leg away from the upper leg
Increasing the angle between two bones
Turning a body part on its own axis
Moving the leg toward the body
Turning the head from side to side
What is muscle tone?
The state of particial contraction
What occurs when muscle atrophy? What causes muscle atrophy?
They strink in size and lose strength, when muscles aren't used for a long time
What is contracture?
A severe tightening of a flexor muscle resulting in bending of a joint
Name the joints affected most frequently by contractures
Muscle of upper arm that flexes lower arm
Muscle on front of thigh that abducts and flexes leg
Muscle on upper back and neck that extends head and moves shoulder
Muscle between ribs used for breathing
Muscle on front of lower leg that flexes and inverts the foot
Tibial is anterior
Three muscles that can be used as injection site
Deltoid, gluteus, Maximus, quadriceps fembris
Muscle that compresses the abdomen
Muscle on the upper chest that addicts upper arm
Muscle on side of neck that turns and flexes head
Muscle on the front of thigh that extends leg
Sudden painful involuntary muscle contractions
A group of inherited diseases that lead to chronic, progressive muscle atrophy
Chronic condition where nerve impulses aren't properly transmitted to the muscles
Over stretching of or injury to a muscle and/or tendon
Chronic, widespread pain in specific muscle sites
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