A&P Test Review

Sternocleidomastoid

Is NOT a smooth muscle

Plantar flexion

A common movement of the feet for a ballerina

The most common type of ankle sprain is cause by a ? movement

Inversion

NOT a characteristic of skeletal muscle

Skeletal muscle cells have single centrally located nuclei and are fusiform in shape

Contraction or shortening

The essential function of the muscle tissue

Muscle that causes dorsiflexion and inversion of the foot

Tibialis anterior

Latissimus Dorsi

Muscle that extends and deducts the humerus

Biceps Brachii

Muscle that causes flexion of the forearm

The origin of the muscle

The attachment of the muscle to a bone that is relatively fixed

Skeletal muscles have their insertions

On the part that is to be moved

Fixators

Muscles that are concerned with bracing actions

Adduction

The bending or movement of a limb towards the midline of the body

Prime mover

Muscle that is mainly responsible for a particular movement

Actin and myosin

Myofibrils are composed of this

Skeletal muscle fibers

Endomysium surrounds this

Skeletal muscle

Tissue that has striations and many flattened nuclei under the plasma membrane in each cell

Striations

Shared with cardiac and the skeletal muscle

ATP

Energy source that is directly responsible for muscle fiber contraction

Smooth muscle fibers

Form the contractile tissue of the walls of many hollow organs

Sarcolemma

The plasm membrane of a muscle cell

Muscle fiber

Muscle cell is referred to this

Movement

Muscle tissue is responsible for this

Skeletal muscles have their insertions on

On the part that is to be moved

If a large part of the cardiac muscle stopped receiving oxygen, you would have a

Heart attack

Muscle

The organ, made of many fascicles

Fascicle

A bundle of muscle fibers

Muscle fiber

A muscle cell, made of many myofibrills

Myofibril

Long proteins that make up each muscle fiber

Myofilaments

Make up sarcomeres, actin & myosin

Tendon

Connected skeletal muscle to bone

Epimysium

Connective tissue sheath that surrounds the entire muscle

Perimysium

Connective tissue sheath that surrounds each fascicle

Endomysium

Connective tissue sheath that surrounds each muscle fiber

Sarcolemma

Plasma membrane around each muscle

Sarcomere

Line up to form myofibrills, smallest unit where contraction occurs

Voluntary muscle

Muscles you are able to control

Involuntary muscle

Muscles you CANNOT control

Smooth muscle

Found in internal organs

Cardiac muscle

Found ONLY in the heart

Skeletal muscle

Attached to bones of skeletons

Abduction

Movement of a limb away from midline

Adduction

Movement of a limb towards the midline

Dorsiflexion

Lifting the foot

Plantar Flexion

Foot down; pointing the toes

Inversion

Foot stretches to the left

Eversion

Foot stretches right

Supination

Radius & Ulna are parallel

Pronation

radius rotates over ulna

Opposition

The tips of other fingers touch together

Prime mover

Muscle w the responsibility for certain movement

Antagonist

Muscle that reverses a prime mover

Synergist

Muscle that helps prevent rotation and aids a prime mover

Fixator

Stabilizes the origin of a prime mover