Skeleton muscles

An action of the gracilis muscle is ______.

adduction of thigh

When the triceps brachii extends the elbow, its action is considered to be that of which of the following?

agonist

Skeletal muscles are grouped according to their primary actions into which of the following three types?

agonists, antagonists, synergists

Which correctly describes the action(s) of the semitendinosus and semimembranosus?

flexes leg; rotates leg

The semimembranosus is a muscle on the ______ side of the thigh

posterior

When an appendicular muscle is contracting, the less moveable muscle attachment is usually the ______ attachment.

proximal

Which muscle extends the leg?

rectus femoris

What are the four muscles of the quadriceps group?

rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

Usually during axial muscle contraction, the more moveable muscle attachment, the ______ attachment is pulled toward the less moveable muscle attachment.

superior

Which category is utilized in the naming of the extensor radialis longus muscle?

muscle action

The sternocleidomastoid muscle get its name from which category for naming muscles?

muscle attachments

The gluteus maximus muscle gets its name from which categories for naming muscles?

muscle size

Agonist

muscle that contracts to produce a movement

Antagonist

muscles that oppose or reverse thr agonist

What are some terms used in naming muscles according to orientation of fascicles?

oblique, rectus

Which are muscles that flex the leg at the knee joint?

-Semimembranosus -Sartorius -Biceps femoris -Semitendinosus -Gracilis

Synergist

A muscle that either contributes to tension close to the insertion or stabilizes the point of origin.

The thigh muscles of the anterior compartment ______ the thigh.

Flex

A muscle of the thigh's medial compartment is the ______.

Gracillis

Which correctly describes the action(s) of the sartorius on the knee joint?

Medially rotates leg, flexes leg

Which category is utilized in the naming of the deltoid muscle?

Muscle shape

Which muscles can move both the hip joint and the knee joint?

Rectus femoris, gracilis, sartoritus, semimembranosus

Teres refers to

Shape of a muscle

True or false: The anatomical and functional criteria for defining compartments of muscles that move the hip and knee joints are identical.

True

The orbicularis oris muscle is named for its ______.

arrangement of muscle fascicles and body location

In general, muscles in the anterior compartment of the thigh tend to ______.

extend the leg at the knee joint and flex the thigh at the hip joint

Which of the following compartments contains one or more muscles that move the hip joint but not the knee joint?

lateral

Muscles that move the knee joint ______.

within each compartment have similar actions on the knee joint are separated into anatomical compartments by deep fascia