Part 6

Question 1

The bony thorax is made up of what?

Answer 1

Sternum, Ribs, Thoracic Vertebrae

Question 2

What is the function of the thoracic cage?

Answer 2

Forms a protective cone-shaped cage of slender bones around the organs of the thoracic cavity (heart, lungs, major blood vessels)

Question 3

What is the Sternum (breastbone) made of and what 3 bones are fused together to make it up?

Answer 3

Flat bone; Manubrium, Body, Xiphoid Process

Question 4

How many ribs is the sternum attached to?

Answer 4

The first 7

Question 5

How many ribs make up the thoracic cage?

Answer 5

12 pairs

Question 6

True ribs-

Answer 6

attack directly to the sternum by costal cartilages; the first 7 pairs

Question 7

False Ribs-

Answer 7

Either attach indirectly to the sternum or are not attached to the sternum at all; the next five are pairs of ribs

Question 8

Floating ribs-

Answer 8

lack a sternal attachment; last two pairs of the false ribs

Question 9

Intercostal spaces-

Answer 9

space between the ribs

Question 10

How many bones does the Appendicular Skeleton have?

Answer 10

composed of 126 bones of the limbs and the pectoral pelvic girdles

Question 11

Each shoulder girdle consists of how many bones and what are the names?

Answer 11

2; Clavicle, Scapula

Question 12

Clavicle-

Answer 12

collarbone; slender doubly curved bone.

Question 13

What does the clavicle attach to?

Answer 13

The sternum medially, and to the scapular laterally where it helps form the shoulder joint

Question 14

What is the function of the Clavicle?

Answer 14

Acts as a brace to hold the arm away from the top of the thorax and helps prevent shoulder dislocation

Question 15

Scapulae-

Answer 15

Shoulder blades

Question 16

What are the two important processes in the scapula?

Answer 16

The Acromion and the Coracoid Process

Question 17

Acromion-

Answer 17

The enlarged end of the spine of the scapula

Question 18

Coracoid Process-

Answer 18

Beaklike process

Question 19

Why is the shoulder girdle very light and allowed to have free movement?

Answer 19

attaches to the axial skeleton at one point (sternoclaicular joint), loose attachment of the scapula allows it to slide back and forth, glenoid cavity is shallow and the shoulder join is poorly reinforced by ligaments

Question 20

What is the drawback to a free moving scapula?

Answer 20

Easily Disloacted

Question 21

How many bones are in the upper limb of the body?

Answer 21

30

Question 22

The arm is formed by what single bone?

Answer 22

The Humerus

Question 23

What two bones form the skeleton forearm?

Answer 23

The Radius, Ulna

Question 24

The Radius-

Answer 24

the lateral bone when the body is in anatomical position. on the thumb side of the forearm

Question 25

ulna-

Answer 25

the medial bone, when the body is in anatomical positon. on the little finger side of the forearm

Question 26

Where do both bones in the arm articulate?

Answer 26

At small radioulnar joints

Question 27

How are the two bones in the arm connected to each other?

Answer 27

Flexible interosseous membrane

Question 28

The skeleton of the hand consists of what?

Answer 28

The carpals, metacarpals, phalanges

Question 29

how many capral bones form the wrist?

Answer 29

8 irregular bones that are arranged in rows of four bones each and bound together by ligaments that restrict movement

Question 30

What does the metacarpals make up?

Answer 30

The palm of the hand

Question 31

What are the phalanges?

Answer 31

Bones of the fingers

Question 32

Each hand contains how many phalanges?

Answer 32

14

Question 33

How many phalanges are in each finger?

Answer 33

3; Proximal, middle and distal except for the finger which only contains 2