Exam 2

Question 0

Vellus

Answer 0

Replaces baby hair and similarly fine and pale. 2/3 the hair of women. 1/10 male hair. 100% child hair except eyebrows.

Question 1

Lanugo

Answer 1

Fine, downy, unpigmented hair that appears on the fetus in the last 3 months of development

Question 2

Terminal hair

Answer 2

Longer and coarser and more pigmented

Question 3

Hair bulb

Answer 3

Swelling at the base

Question 4

Root

Answer 4

The remainder of the hair within the follicle

Question 5

Shaft

Answer 5

The portion above the skin surface

Question 6

Dermal papilla

Answer 6

Provides hair with nutrition

Question 7

Hair matrix

Answer 7

Hair growth centers. Only part of structure that is living.

Question 8

Medulla

Answer 8

Core of loosely arranged cells and air spaces

Question 9

Cortex

Answer 9

The hairs bulk. Elongated keratinized cells that appear cuboidal to flattened in cross section

Question 10

Cuticle

Answer 10

Composed of multiple layers of very thin scaly cells that overlap each other like roof shingles

Question 11

Two layers of the hair follicle

Answer 11

Epithelial root sheath

Connective tissue root sheath

Question 12

Shaft of a long bone

Answer 12

Diaphysis

Question 13

Head of long bone

Answer 13

Epiphysis

Question 14

Bones growth zone

Answer 14

Epiphyseal plate

Question 15

Spongy layer in cranium

Answer 15

Dipole

Question 16

Perforation sharpey fibers

Answer 16

Fibrous covering of long bone

Question 17

Two types of bone marrow

Answer 17

Red and yellow

Question 18

Osteogenic cells develop from

Answer 18

Mesenchymal cells

Question 19

Osteogenic cells are found in the

Answer 19

Endosreum, the inner layer of the periosteum

Question 20

Osteoblasts line up in a single layer on the bone surface under the

Answer 20

Endosteum and periosteum

Question 21

Osteoblasts secrete

Answer 21

Osteoclasin which increases insulin sensitive in adipocytes

Question 22

Osteocytes are former

Answer 22

Osteoblasts that have become trapped in their matrix. Trapped in lacunae.

Question 23

Lacunae are connected by

Answer 23

Canaliculi

Question 24

Osteoclasts develop from the same stem cells as

Answer 24

Blood cells. They have multiple nuclei.

Question 25

Osteoclasts use ruffled borders for

Answer 25

Absorption of bone

Question 26

The inorganic matter of bone matrix is primarily (85%) made up of

Answer 26

Hydroxyapatite

Question 27

Bone matrix is 10%

Answer 27

Calcium carbonate

Question 28

Synostosis articulation

Answer 28

Ridged bone fusion like parietal skull bones

Question 29

Gomphosis articulation

Answer 29

Tooth and gums. Fibrous CT within socket

Question 30

Suture articulation

Answer 30

Dense CT between

Question 31

Synchondrosis articulation

Answer 31

Cartilage between

Question 32

Amphiarthtosis syndesmosis

Answer 32

Ligament connects