AP Chap 11 Smartbook

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

- Rectus - Oblique

Which of the following is/are functions of the intrinsic muscles of the foot?

- abduct and adduct the toes - support the arches - flex and extend the toes

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

- adduct the thigh at the hip joint - flex the leg at the knee joint

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

- agonists - synergists - antagonists

Which muscles extend the forearm?

- anconeus - triceps brachii

Which of the following are muscles that move the glenohumeral joint that originate on the scapula?

- biceps brachii - triceps brachii - teres major - coracobrachialis - deltoid

Which muscles flex the forearm?

- brachioradialis - brachialis - biceps brachii

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

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

The functions of the erector spinae muscles include ______.

- lateral flexion of vertebral column - extension of vertebral column - maintenance of posture

Which are the muscles of the anterior compartment of the thigh?

- sartorius - rectus femoris - iliacus - psoas major

What are some terms used in naming muscles according to shape?

- trapezius - deltoid - rhomboid

Muscles that move the knee joint ______.

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

Contraction of the lateral muscle of the thigh results in Blank______.

-Abduction of the thigh -Medial rotation of the thigh

Compartments of the thigh ______.

-Include blood vessels and nerves for a single compartment -Include muscles with similar actions -Are anatomically defined by the fascia latae

The glenohumeral joint is crossed by ______ muscles.

11

In the figure, the long head of the biceps femoris is indicated by the letter _____.

A

Identify the muscles as indicated in the inferior views of the male and female superficial pelvic floor muscles. Item A _____. Item B _____. Item C _____.

A - bulbospongiosusB - ischiocavernosusC - levator ani

Identify the extrinsic eye muscles specified in the image of the right eye, lateral view. Item A—Superior _____. Item B—Inferior _____.

A - rectus B - oblique

Using the figure of the anterior leg, match the letter with the muscle.

A. Fibula's longus B. Gastrocnemius C. Extensor digitorum longus

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

Agonist

The muscles that move the pectoral girdle are classified as either ______.

Anterior or posterior

In the figure, the semitendinosus is indicated by the letter _____.

B

Which of the following muscles in the figure is the tibialis anterior?

B

n the figure, the psoas major is indicated by the letter _____.

B

In the figure, the semimembranosus is indicated by the letter _____.

C

The term mastication refers to the process of ______.

Chewing

The orbicularis oris muscle is an example of a ______ muscle.

Circular

In the figure, the short head of the biceps femoris is indicated by the letter ______.

D

During exhalation, muscles of respiration ______

Decrease the space of the thoracic cavity

The pectoralis minor muscle is ______ to the pectoralis major muscle.

Deep

The suprahyoid muscles ______ the hyoid bone.

Elevate

The muscles of the thenar and hypothenar group form fleshy masses, each called a(n) ______, a term given to a circumscribed area raised above the general level of the surrounding surface.

Eminence

Which muscle group maintains a person's posture and helps the individual to stand erect?

Erector spinal

The hamstring group of muscles ______ the thigh and ______ the leg.

Extend; flex

When any one or all of the posterior muscles of the hamstring group are contracted, the thigh is ______.

Extended

Contraction of gluteal muscles results in ______.

Extension of the thigh

Most muscles in the forearm are called ______ muscles of the hand and wrist because these muscles arise from the forearm, not the wrist or hand.

Extrinsic

True or false: All anterior muscles that move the pectoral girdle are deep to other thoracic muscles.

False Reason: Review the right side of the body where the anterior muscles are illustrated.

True or false: The intrinsic muscles of the foot act primarily to evert and invert the foot.

False Reason: The intrinsic muscles of the foot primarily act to move the toes and support the arch of the foot.

When the psoas major contracts, the thigh is ______.

Flexed

Muscles of the anterior neck that are inferior to the hyoid bone are called ______ muscles.

Infrahyoid

The thoracic muscles increase the space of the thoracic cavity during ______.

Inspiration

The ______ muscles of the foot move the toes.

Intrinsic

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

Lateral

Which term refers to the process of chewing?

Mastication

Which muscle adducts the eye?

Medial Rectus

Most muscles of the Blank______ compartment act as both extensors of the thigh and flexors of the knee.

Posterior

The "hamstrings" are muscles of the ______ compartment of the thigh.

Posterior

The biceps femoris is on the ______ side of the thigh.

Posterior

The semitendinosus is on the ______ side of the thigh.

Posterior

The pectoralis minor is an example of a muscle that Blank______ the scapula.

Protracts

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

Proximal

A circular muscle is also called a(n) ______.

Sphincter

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

Superior

Why is the forearm larger near the elbow than it is near the wrist?

The bellies of the forearm muscles that move the wrist are located near the elbow; the tendons of these muscles extend toward the wrist.

Which muscle compresses the cheek against the teeth, as in chewing, when it contracts?

The buccinator 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 muscles in the ______ compartment of the arm flexes the arm at the elbow.

anterior

Anatomically, muscles that move the pectoral girdle are classified as ______.

anterior or posterior thoracic

Which of the following identifies the compartments of the thigh?

anterior, posterior, lateral, medial

The muscles of the anterior compartment of the thigh flex the thigh and ______ the knee.

extend

The muscles of the abdominal wall indicated by the letter A in the picture is the ______.

external oblique muscle

Posterior compartment thigh muscles ______ the knee.

flex

In addition to the compartments, muscles in two other groups move the hip joint/thigh, the ______.

gluteal group and deep muscles of the gluteal region

The abdominal wall muscles indicated by the letter B in the picture is the ______.

internal oblique muscle

The hypothenar group forms a small fleshy mass at the base of the ______.

little finger

Muscles of the _____ compartment of the thigh adduct the thigh.

medial

The ______ depresses the scapula.

pectoralis minor

The ______ is formed by three layers of muscles and associated fasciae.

pelvic diaphragm

The neck muscle indicated by the letter B in the given diagram is the ______.

splenius capitis muscle

The neck muscle indicated by the letter A in the provided picture is the ______.

sternocleidomastoid muscle

The letter A indicates which facial muscle is the picture?

the buccinator muscle

The muscles that retract the scapula are the ______.

trapezius and rhomboids (minor and major)