Nerves Of The Upper Limb

Question 1

The axillary nerve supplies the ______ muscles

Answer 1

deltoid and teres minor
muscles

Question 2

The five main branches of brachial plexus
are _____

Answer 2

axillary, musculocutaneous, median, ulnar, and radial
nerves

Question 3

The musculocutaneous, median, and ulnar nerves supply
the muscles of ___

Answer 3

anterior (flexor) compartments of the arm
and forearm.

Question 4

The blood to the upper limb is supplied by four main
arteries: ___

Answer 4

axillary, brachial, radial, and ulnar.

Question 5

The axillary artery supplies the _____

The brachial artery supplies the ____.

The radial and ulnar arteries supply the ____

Answer 5

shoulder region.

anterior and posterior
compartments of the arm.

lateral and medial
parts of the forearm, respectively

Question 6

What are the bones of the pectoral girdle

Answer 6

Scapular and clavicle

Question 7

The muscles and ligaments attached to the clavicle are

Answer 7

Muscles Ligaments
Pectoralis major. Coracoclavicular

Sternocleidomastoid (clavicular head) Costoclavicular

Deltoid Interclavicular

Trapezius

Subclavius

Question 8

The fracture at the junction of lateral onethird and medial two-third of the clavicle occurs because:
.

Answer 8

(a) This is the weakest site.
(b) Two curvatures of clavicle meet at this site.
(c) The transmission of forces (due to impact) from the
clavicle to scapula occur at this site through
coracoclavicular ligament

Question 9

What is clavicular dysostosis

Answer 9

Clavicular dysostosis: It is a clinical condition in which
medial and lateral parts of clavicle remain separate due to
nonunion of two primary centers of ossification.

Question 10

What is cleidocranial dysostosis

Answer 10

Cleidocranial dysostosis: It is a clinical condition
characterized by partial or complete absence of clavicle
associated with defective ossification of the skull bones

Question 11

What is the scapula

Answer 11

Answer: The scapula, also known as the shoulder blade, is a flat, triangular bone located on the upper back.

Question 12

How many borders does the scapula have?

Answer 12

Answer: The scapula has three borders: superior, medial (vertebral), and lateral (axillary) borders

Question 13

Which bone articulates with the scapula to form the shoulder joint

Answer 13

Answer: The humerus articulates with the scapula to form the shoulder joint.

Question 14

What is the acromion process?

Answer 14

Answer: The acromion process is a bony projection of the scapula that forms the tip of the shoulder.

Question 15

What is the function of the scapula?

Answer 15

What is the function of the scapula?
Answer: The scapula provides attachment points for muscles involved in shoulder movement and stability.

Question 16

Which muscles attach to the scapula?

Answer 16

Answer: Muscles such as the trapezius, deltoid, and rhomboids attach to the scapula.

Question 17

What is the scapular spine?

Answer 17

Answer: The scapular spine is a ridge on the posterior aspect of the scapula that divides it into unequal portions.

Question 18

Which bone articulates with the scapula at the glenoid cavity?

Answer 18

Answer: The head of the humerus articulates with the scapula at the glenoid cavity.

Question 19

What is the function of the scapular notch?

Answer 19

Answer: The scapular notch allows the passage of nerves and blood vessels.

Question 20

Which bone does the scapula articulate with on its medial side?

Answer 20

Answer: The clavicle articulates with the scapula on its medial side at the acromioclavicular joint

Question 21

What is the infraspinatus fossa?

Answer 21

Answer: The infraspinatus fossa is a concave surface on the posterior scapula where the infraspinatus muscle attaches

Question 22

Name the three angles of the scapula.

Answer 22

Answer: The three angles of the scapula are the superior angle, inferior angle, and lateral angle.

Question 23

What is the coracoid process?

Answer 23

Answer: The coracoid process is a curved projection on the anterior scapula that serves as an attachment point for muscles.

Question 24

Which bone articulates with the scapula at the coracoclavicular joint?

Answer 24

Answer: The clavicle articulates with the scapula at the coracoclavicular joint.

Question 25

Which bone articulates with the scapula at the glenoid cavity

Answer 25

Answer: The head of the humerus articulates with the scapula at the glenoid cavity.

Question 26

What is the subscapular fossa?

Answer 26

Answer: The subscapular fossa is a large, concave surface on the anterior scapula where the subscapularis muscle attaches

Question 27

What is the function of the scapulothoracic joint?

Answer 27

Answer: The scapulothoracic joint allows the scapula to move along the thoracic wall during arm movement.

Question 28

What is the suprascapular notch?

Answer 28

Answer: The suprascapular notch is a notch on the superior border of the scapula, allowing the passage of the suprascapular nerve.

Question 29

Which muscle helps stabilize the scapula against the thoracic wall?

Answer 29

Answer: The serratus anterior muscle helps stabilize the scapula against the thoracic wall.

Question 30

What is the role of the scapula in shoulder abduction?

Answer 30

Answer: The scapula upwardly rotates during shoulder abduction, contributing to the full range of arm movement.

Question 31

How is the scapula positioned on the body?

Answer 31

Answer: The scapula is positioned between the second and seventh ribs on the posterior thoracic wall.