Mastering HW Ch 10

The long head of the biceps femoris muscle originates on the __________.

ischial tuberosity

The origin of the external obliques includes ribs __________.

5-12

Which of the following statements is correct regarding muscle position and its related action?

A muscle that crosses on the posterior side of the knee joint produces flexion.

The rectus femoris muscle extends the leg at the __________.

knee

Which of the following statements is correct regarding muscle position and its related action?

The teres major crosses on the medial side of the shoulder joint to produce adduction

The middle fibers of the deltoid muscle __________.

abduct the arm

One of the actions of the latissimus dorsi muscle is to __________.

adduct the arm

Which functional group has the major responsibility for producing a specific movement?

agonist or prime mover

________ are the muscles primarily responsible for producing a particular movement.

agonists

The origin of the rectus femoris is the ____________.

anterior inferior iliac spine

The origin of the Sartorius muscle is from the __________ spine.

anterior superior iliac spine

The deltoid muscle fibers are separated into __________.

anterior, middle, and posterior

The trapezius muscle may be separated into all of the following groups, except __________.

lateral

The origins of the lateral head of the gastrocnemius muscle are the __________.

lateral condyle and posterior surface of the femur

The _______ and deltoid posterior fibers are prime movers of arm extension.

latissumus dorsi

The subscapularis muscle inserts on the __________.

lesser tubercle of the humerus

Which of the following muscles is named for its action?

levator labii superioris

The origin that the vastus medialis muscle shares with the vastus lateralis is the __________.

linea aspera of the femor

The masseter is innervated by the _____________ branch of the trigeminal nerve

mandibular

The masseter muscle originates on the __________.

medial surfaces of the maxilla and the zygomatic arch as well as the inferior border of the zygomatic arch

The latissimus dorsi inserts __________.

on the intertubercular groove of the humerus

The pectoralis minor muscle is innervated by the __________.

pectoral

The ____ crosses the anterior side of the should joint and is the prime mover of arm flexion.

pectoralis major

The latissumus dorsi is an antagonist of the ________ for arm flexion.

pectoralis major

To allow for flexion, the __________ unlocks the knee joint.

popliteus

The biceps femoris is located in the __________.

posterior thigh

The origins of the rectus abdominus muscle are on the __________.

pubic bone

All fibers of the triceps brachii are innervated by the __________.

radial nerve

The two heads of the biceps brachii combine to insert on the __________.

radial tuberosity

Which is CORRECTLY matched?

rectus:straight

All fibers of the trapezius muscle are innervated by the __________.

spinal accessory nerve

Which of the following muscles is named for its origin and insertion?

sternocleidomastoid

The _____ is an antagonist of the _____ for arm abduction.

teres major, deltoid

The two heads of the gastrocnemius muscle converge to insert onto __________.

the calcaneus

The gastrocnemius muscle is innervated by the __________.

tibial nerve

The prime mover of elbow extension is the __________.

triceps brachii

Which of the following is NOT used as a criterion for naming muscles?

whether the muscle is controlled by the involuntary or voluntary nervous system

Which of the following is a hamstring muscle?

biceps femoris (along with semitendinosus, and semimembranosus)

The muscle that generates the most power during elbow flexion is the __________.

brachialis

The actions of the internal obliques include __________.

compression of the abdomen to assist in forced expiration

As the prime mover of arm abduction, the middle fibers of the ____ contract to move the arm laterally away from the body.

deltoid

The vastus intermedius __________ the leg at the knee.

extends

The gluteus maximus is the most powerful muscle during __________.

extension

The vastus lateralis is innervated by the __________.

femoral nerve

Both heads of the biceps femoris muscle __________.

flex the leg at the knee

The majority of the fibers of the gluteus maximus insert onto the __________.

ileotibial tract