Pectoral Girdle And Upper Limbs

Question 1

Clavicle (collar bones)

Answer 1

Slender bone, elongated S-shape

Run from manubrium of sternum to the scapula

Brace freely moveable scapula

Provide muscle attachments for upper limbs, chest and back

Question 2

Scapulae (shoulder blades)

Answer 2

Broad, triangular shaped bones on either side of upper back

Spine on posterior surface

Has two processes, acromion and coracoid

Depression called glenoid cavity

Question 3

Acromion process

Answer 3

Forms tip of shoulder

Articulates with the clavicle

Provides attachments for muscles of the upper limb and chest

Question 4

Coracoid process

Answer 4

Curves anteriorly and inferiorly to the clavicle

Provides attachments for upper limb and chest muscles

Question 5

Glenoid cavity (glenoid fossa)

Answer 5

Depression that articulates with the head of humerus

Question 6

Function of the upper limbs

Answer 6

Form the framework of arm, forearm and hand

Provide attachments for muscles

Function in levers that move limb parts

Question 7

What bones are included in the upper limbs?

Answer 7

Humerus
Radius
Ulna
Carpals
Metacarpals
Phalanges

Question 8

Humerus

Answer 8

Heavy bone

Extends from scapula to elbow

Round head articulates with glenoid cavity

Question 9

What are the two processes of the humerus?

And what is their function?

Answer 9

Greater tubercle
Lesser tubercle

Provide attachments for muscles that move the upper limb at the shoulder

Question 10

Deltoid tuberosity

Answer 10

V shaped area

Provides attachment for deltoid

Question 11

Humerus has two condyles at lower end.

What are they called?

And what do they articulate with?

Answer 11

Capitulum, trochlea

Articulate with radius and ulna

Question 12

What are the two depressions of the humerus?

And which receives what processes?

Answer 12

Coronoid fossa receives coronoid process of ulna when elbow bends

Olecranon fossa receives olecranon process of ulna when elbow straightens

Question 13

Radius

Answer 13

Located on thumb side

Extends from elbow to wrist

Disk-like head articulates with humerus and ulna. Allows radius to rotate freely

Proximal Has radial tuberosity that serves as attachment for biceps brachii

Distal has styloid process that serves as attachments for wrist ligaments

Question 14

Ulna

Answer 14

Longer than radius

Overlaps end of humerus posteriorly

Proximal end has trochlear notch

Olecranon process and coronoid process provide sites of muscle attachment

Question 15

Wrench like opening that articulates with humerus

Answer 15

Trochlear notch

Question 16

Hand

Answer 16

Composed of wrist, palm and 5 fingers

Question 17

Skeleton of the wrist consists of ________ small carpal bones

Answer 17

Eight

Question 18

Resulting compact mass is called a

Answer 18

Carpus

Question 19

Carpus articulates with

Answer 19

Radius ulna and metacarpals

Question 20

How many phalanges on each hand ?

Answer 20

14

Question 21

Wrist and hand contain how many bones?

Answer 21

27