Biology CH7

Question 1

backbone” of the skeletal system

Answer 1

axial skeleton

Question 2

bone area that protects the brain

Answer 2

skull

Question 3

composes the top, sides, and rear of the skull. Largest part of the skull

Answer 3

cranium

Question 4

the soft spots on the top and back of an infant’s head

Answer 4

fontanels

Question 5

serve as the framework of the face and jaw

Answer 5

facial bones

Question 6

form the central portion of
the face and serve as the attachments for your upper teeth

Answer 6

maxillary bones

Question 7

which forms the lower jaw and holds the lower teeth

Answer 7

mandible

Question 8

the roof of the mouth

Answer 8

palate

Question 9

hollow spaces within the skull

Answer 9

sinuses

Question 10

serves as the foundation of many of the tongue muscles and of certain other muscles that allow you to swallow

Answer 10

hyoid bone

Question 11

The smallest bones in the human body are the three
middle ear bones. what are they called

Answer 11

the malleus, incus, and stapes

Question 12

chief structural member of the body

Answer 12

spine

Question 13

allow the spine to bend and twist somewhat; these disks also act as shock absorbers.

Answer 13

intervertebral

Question 14

tough, rubbery connective tissue that cushions the joints
between bones

Answer 14

Cartilage

Question 15

seven vertebrae that form the neck

Answer 15

cervical vertebrae

Question 16

serve as attachments for the rib cage

Answer 16

thoracic vertebrae

Question 17

support the weight of the entire upper body.

Answer 17

lumbar vertebrae

Question 18

coccyx

Answer 18

tail bone

Question 19

severe lateral curvature of the spine

Answer 19

scoliosis

Question 20

cage of bones that protect the chest

Answer 20

thoracic cage

Question 21

the most prominent bones of the thoracic cage

Answer 21

ribs

Question 22

allow the thoracic cage to expand

Answer 22

costal cartilages

Question 23

includes the
126 bones that form the pectoral girdle (the shoulders), the pelvic girdle (the hips), and the appendages (the arms and legs)

Answer 23

appendicular skeleton

Question 24

includes the shoulder blades

Answer 24

pectoral girdle

Question 25

scapulae

Answer 25

shoulder blades

Question 26

largest of the three bones in the arm

Answer 26

humerus

Question 27

bone on the same side of your forearm as your little finger, is attached firmly to the humerus by a strong, hinge-like joint

Answer 27

ulna

Question 28

the bone on the same side as your thumb, is attached to the ulna and humerus by a weaker but more movable joint that allows it to rotate around the ulna

Answer 28

radius

Question 29

, form an intricate assembly that allows the wrist to bend in various directions

Answer 29

carpals

Question 30

compose the base of the thumb and the main part of the hand

Answer 30

metacarpals

Question 31

bones that form the fingers and thumb

Answer 31

phalanges

Question 32

forms a rigid ring of thick bone that supports most of the body’s weight

Answer 32

pelvic girdle

Question 33

longest bone in the body

Answer 33

femur

Question 34

The main weight-bearing bone of the leg

Answer 34

tibia

Question 35

much thinner than the tibia and does not attach to the femur at all. Rather, it is attached to the tibia, just as the radius is attached to the ulna in the fore-arm.

Answer 35

fibula