27 Dec supraspinatus

BIOS251 Anatomy & Physiology I with Lab

Week 7 Chapter 9 Muscles in Motion – Shoulder

The shoulder (glenohumeral) joint is a ___________ synovial joint.

hinge

ball-and-socket

pivot

planar

Most of the strength in the shoulder joint comes from the ______________.

articular capsule

coracohumeral ligament

rotator cuff muscles

glenohumeral ligaments

Which of the following is NOT a rotator cuff muscle?

subscapularis

supraspinatus

teres minor

teres major

Which rotator cuff muscle originates on the subscapular fossa of the scapula and inserts on the lesser tubercle of the humerus?

teres minor

subscapularis

infraspinatus

supraspinatus

When all rotator cuff muscles are activated at the same time they act to hold the head of the humerus in the _______________.

glenoid cavity

acetabulum

coracoid process

acromion

The teres major and __________ act synergistically to extend the shoulder.

coracobrachialis

pectoralis major

latissimus dorsi

supraspinatus

During the downswing, a right-handed batter’s right shoulder ___________ as the left shoulder __________________.

abducts and extends ; adducts and extends

adducts and extends ; abducts and extends

abducts and flexes; adducts and flexes

adducts and flexes; abducts and flexes

The pectoralis major and _____________ are the prime movers of shoulder adduction.

supraspinatus

deltoid

coracobrachialis

supraspinatus

The deltoid muscle inserts on the ___________ of the humerus.

head

greater tubercle

lesser tubercle

deltoid tuberosity

The ___________ is a rim of fibrocartilage that slightly deepens t