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Muscle Organization
Appendage Muscles
Muscular Disorders
Muscles of the trunk
Muscle Actions
100

Thin filaments are made of protein molecules called___

actin

100

What are the 4 muscles that make up the rotator cuff? (S.I.T.S)

supraspinatus, infraspinatus, teres minor, subscapularis

100

When a muscle undergoes atrophy it

Decreases in size and density

100

The "six pack" muscles are called

rectus abdominis

100

Muscles only______,they don't push.

pull

200
Muscle fibers bundled together into groups are called?

Wrapped in perimysium

Fascicles

200

What muscle is named for its triangular shape?

Deltoid

200

The ability of a tissue to be able to respond to a stimulus is defined as

excitability

200

This muscle flexes the trunk and pulls the upper and lower body together.

rectus abdominis

200

Muscles that work with prime movers by providing the opposing action is the _____________.

Antagonist

300

Which muscle cells have more than one nucleus, are striated and are controlled voluntarily?

Skeletal

300

The straight muscle in the middle of the quadriceps group is the

rectus femoris

300

The event that occurs after a person dies where the muscles become locked creating stiffness in the body is known as

rigor mortis

300

This broad back muscle is responsible for shoulder adduction and scapular depression, gives swimmers and body builders "wings".

latissimus dorsi
300

The antagonist of the biceps brachii

triceps brachii

400

The contractile unit of a skeletal muscle, situated between the Z-lines is called

Sarcomere

400

Which muscle is primarily being used when the foot is dorsiflexed or inverted

Tibialis Anterior

400

A genetic disorder that causes a person to not produce the protein dystrophin causing a person to lose muscle and become weaker, eventually losing their ability to move is called

muscular dystrophy

400
The layer of abdominal muscle that lies crossways beneath the internal obliques is the

Transverse abdominis

400

Production of energy with oxygen is called__________.

aerobic respiration

500

What are 3 general functions of the muscular system

Movement

Heat Production

Posture

500

Large, bulky muscle on the posterior aspect of your pelvis that extends your hip is the

gluteus maximus

500

This muscular syndrome is when the jaw is misaligned causing grinding or clenching of the teeth. 

TMJ (temporomandibular joint) syndrome

500

A thin sheath of connective tissue that helps connect your muscles to your bones.

aponeurosis
500

The energy required for muscle contraction and a muscle cramp is most likely due to a lack of

ATP