Week 1 Introduction to the Anatomy of Limbs

Question 1

What are the primary abductors at the glenohumeral joint?

Answer 1

1. supraspinatus

2. deltoid-particularly middle part

Question 2

What are the primary rotators at the glenohumeral joint?

Answer 2

Lateral: infraspinatus, teres minor, posterior part of deltoids
Medial: pectoralis major, latissimus dorsi, teres major, and subscapularis

Question 3

What are the major flexors of the glenohumeral joint?

Answer 3

1. coracobrachialis
2. anterior deltoid
3. short head of biceps
4. upper part of pectoralis major

Question 4

What are the extensors of the glenohumeral joint?

Answer 4

1. teres major
2. latissimus dorsi
3. long head of the triceps
4. posterior deltoid

Question 5

What are the abductors of the hip joint?

Answer 5

Gluteus medius, gluteus minimus, and tensor fasciae latae

Question 6

What are the lateral rotators of the hip joint?

Answer 6

Piriformis, obturator internus, obturator externus, quadratus femoris

Question 7

What are the flexors at the hip joint?

Answer 7

Iliopsoas, satorius, rectus femoris, several muscles of adductor compartment

Question 8

What are fibrous joints?

Answer 8

Articulating surfaces are firmly connected by dense connective tissue. Allows for little movement

Question 9

What are synovial joints?

Answer 9

allow greatest degree of movement. They have: joint cavity, hyaline cartilage on bony surface, and joint capsule, synovial lining membrane, synovial fluid