chapter 11 questions
Identify the proximal attachments of the pectoralis major.
costal cartilages of ribs 2-6 medial clavicle body of the sternum
Identify the movements of the glenohumeral joint that occur with contraction of the triceps brachii (long head).
extension of the arm adduction of the arm
The common action of the muscles of the anterior compartment collectively called the quadriceps femoris is ______ at the knee joint.
extension of the leg
Which muscles are involved in extension of the "pinky" finger?
extensor digitorum extensor digiti minimi
Which muscle everts the foot?
fibularis longus
Identify the muscles that laterally rotate the arm at the glenohumeral joint.
infraspinatus deltoid teres minor
Where do the all of the fibers of the latissimus dorsi distally attach?
intertubercular groove of the humerus
The serratus anterior differs from the subclavius and pectoralis minor in that ______.
it inferiorly attaches to the anterior of the thorax, but it superiorly attaches to the posterior of the thorax
Which of the following best describes the location of the serratus anterior?
it is located between the anterior surface of the ribs and the anterior surface of the scapula
The fibularis longus is on the ______ side of the leg.
lateral
Which is a prime mover of the glenohumeral joint?
latissimus dorsi
Which muscles move the glenohumeral joint and originate on the axial skeleton?
latissimus dorsi pectoralis major
Identify the muscles that medially rotate the arm at the glenohumeral joint.
latissimus dorsi teres major pectoralis major subscapularis deltoid
The prime movers of the glenohumeral joint are the ______.
latissimus dorsi and pectoralis major
Which is a muscle of mastication?
masseter
Which muscle adducts the eye?
medial rectus
Which muscle contracts when you blink?
orbicularis oculi
Identify the muscles that adduct the arm at the glenohumeral joint.
pectoralis major coracobrachialis teres major and teres minor latissimus dorsi infraspinatus
Place the posterior forearm muscles in the superficial layer in order from lateral to medial
1. extensor carpi radialis longus 2. extensor carpi radialis brevis 3. extensor digitorum 4. extensor digiti minmi 5. extensor carpi ulnaris
The glenohumeral joint is crossed by ______ muscles.
11
Match each muscle of the medial thigh compartment with its proximal and distal attachment.
adductor longus P, pubis near pubic symphysis D, linea aspera of femur adductor brevis P, inferior ramus and body of pubis D, upper third of linea aspera of femur gracilis P, inferior ramus and body of pubis D, upper medial surface of tibia adductor magnus, hamstring part P, inferior ramus of pubis and ischial tuberosity D, linea aspera of femur
The pectoralis minor muscle is a(n) ______ thoracic muscle.
anterior
The sartorius is a muscle on the ______ side of the thigh.
anterior
Which of the following correctly pairs fibers of the deltoid with their function? Instructions
anterior fibers flex and medially rotate the arm posterior fibers extend and laterally rotate the arm lateral fibers abduct the arm
Identify the location of the pronator quadratus.
anterior forearm
The orbicularis oris muscle is named for its ______.
arrangement of muscle fascicles and body location
Identify the muscles that flex the arm at the glenohumeral joint.
biceps brachii deltoid coracobrachialis
Match the anterior muscles of the arm with their points of proximal and distal attachment.
biceps brachii, long head P, supraglenoid tubercle of scapula D, radial tuberosity and bicipital aponeurosis brachialis P, distal anterior surface of humerus D, tuberosity and coronoid process of ulna brachioradialis P, lateral supracondylar ridge of humerus D, styloid process of radius biceps brachii, short head P, coracoid process of scapula D, radial tuberosity and bicipital aponeurosis
When any one or all of the posterior muscles of the hamstring group are contracted, the thigh is ______.
extended
Identify the muscles that extend the arm at the glenohumeral joint.
deltoid latissimus dorsi triceps brachii teres major
The actions of the muscles in the anterior compartment of the leg include ______.
dorsiflexion of the foot extension of the toes inversion of the foot eversion of the foot
The actions of the muscles in the lateral compartment of the leg include ______.
eversion of the foot plantar flexion of the foot
The hamstring group of muscles ______ the thigh and ______ the leg.
extend; flex
Which muscle plantar flexes the foot?
gastrocnemius
Match the muscle of the gluteal group and posterior thigh (hamstring) compartment with its proximal and distal attachments.
gluteus maximus P, iliac crest, sacrum, coccyx D, iliotibial tract of fascia latae; linea aspera and gluteal tuberosity of femur biceps femoris, long head P, ischial tuberosity D, head of fibula biceps femoris, short head P, linea aspera of femur D, head of fibula semitendinosus P, ischial tuberosity D, proximal medial surface of tibia
Which muscle acts to abduct the thigh?
gluteus medius
Match the deep muscles of the gluteal region with its proximal and distal attachments.
piriformis P, anterolateral surface of sacrum D, greater trochanter superior gemellus P, ischial spine and tuberosity D, greater trochanter inferior gemellus P, ischial tuberosity D, obturator internus tendon quadratus femoris P, lateral border of ischial tuberosity D, intertrochanteric crest of femur
Most of the ______ compartment muscles are wrist and finger extensors.
posterior
The biceps femoris is on the ______ side of the thigh.
posterior
The gastrocnemius muscle is on the ______ side of the leg.
posterior
The semimembranosus is a muscle on the ______ side of the thigh.
posterior
Identify the location of the supinator.
posterior forearm
To locate the teres major, where would you look?
posterior of body, inferior to rotator cuff muscles
The superficial anterior muscles of the forearm include ______.
pronator teres brachioradialis flexor carpi ulnaris palmaris longus flexor carpi radialis
Match each anterior forearm muscle with its action(s).
pronator teres pronates forearm flexor carpi radialis flexes wrist and abducts hand palmaris longus weak wrist flexor flexor carpi ulnaris flexes wrist and adducts hand flexor digitorum superficialis flexes wrist, 2nd-5th metacarpophalangeal joints, and proximal interphalangeal joints
Match each muscle of the anterior and lateral thigh compartments with its corresponding proximal and distal attachment.
psoas major P, transverse processes and bodies of vertebrae T12-L5 D, lesser trochanter iliacus P, iliac fossa D, lesser trochanter of femur sartorius P, anterior superior iliac spine D, tibial tuberosity, medial side tensor fasciae latae P, iliac crest and lateral surface of anterior superior iliac spine D, iliotibial band
What are some terms used in naming muscles according to shape?
rhomboid trapezius deltoid
With regard to extension of the arm, the latissimus dorsi is an agonist; with regard to adducting and medially rotating the arm, this muscle is a(n)
synergist
Which of the following are considered powerful plantar flexors?
soleus gastrocnemius
The overall, general function of all of the muscles of the rotator cuff is to ______.
stabilize the glenohumeral joint
Identify the muscles that abduct the arm at the glenohumeral joint.
supraspinatus deltoid
The rotator cuff muscles are ______.
supraspinatus, infraspinatus, teres minor, and subscapularis
Which of the following are considered muscles of mastication?
the temporalis muscle the lateral pterygoid muscle the masseter muscle the medial pterygoid muscle
The primary muscle that dorsiflexes the foot is the ______.
tibialis anterior
Match the posterior muscles of the arm with their proximal and distal attachments.
triceps brachii, long head P, infraglenoid tubercle of scapula D, olecranon of ulna triceps brachii, lateral head P, posterior humerus above radial groove D, olecranon of ulna triceps brachii, medial headP, posterior humerus below radial groove D, olecranon of ulna anconeus P, lateral epicondyle of humerus D, olecranon of ulna
True or false: The attachments of the deltoid form a fan-shaped muscle responsible for the rounded contour of the shoulder.
true
Identify the action common to the following muscles:extensor digitorum, extensor carpi radialis brevis, extensor carpi radialis longus, and extensor carpi ulnaris.
wrist extension
