3 Histology and Integumentary System

Question 1

Four types of tissue and their purpose

Answer 1

Connective (connect), Muscle (contract), Epithelial (cover), Nervous (conduct)

Question 2

Epithelia tissue is derived from

Answer 2

Ectoderm, mesoderm, and endoderm

Question 3

Connective Tissue derived from

Answer 3

Mesoderm

Question 4

Muscle tissue is derived from

Answer 4

Mesoderm

Question 5

Nervous tissue is derived from

Answer 5

Ectoderm

Question 6

Cellularity

Answer 6

minimal amounts of extracellular fluid

Question 7

Polarity

Answer 7

defined apical (free or top surface) and basal (fixed or bottom surface) layers

Question 8

Attachment

Answer 8

Basal layer bound to basement membrane

Question 9

Avascularity

Answer 9

no blood vessels, gets nutrients from underlying connective tissue,

Question 10

Innervation

Answer 10

Contains nerve endings

Question 11

Regeneration

Answer 11

Cells replaced at high rate via mitosis

Question 12

Tight Junctions

Answer 12

continuous sealed plasma membranes near apical surface

Question 13

Adhering Junctions

Answer 13

Typically located deep to tight junctions

Question 14

Desmosomes

Answer 14

Provide resistance at a single stress point

Question 15

Gap Junctions

Answer 15

Direct passageways for small molecules to travel between cells

Question 16

where is Cilia found?

Answer 16

respiratory and reproductive systems

Question 17

Microvilli is for

Answer 17

increasing surface area of a cell, kidney tubules and small intestine.

Question 18

function and locations of Simple Squamous Epithelium

Answer 18

diffusion and filtration, in the lung sacks (alveoli), lining of blood vessels, serous membranes.

Question 19

Transitional Epithelium functions

Answer 19

Distention and relaxation of urinary structures

Question 20

Exocrine glands

Answer 20

ducts that secrete material onto an epithelial surface

Question 21

Endocrine glands

Answer 21

ductless, cells secrete products into interstitial fluid and bloodstream

Question 22

What does and what is the merocrine glands?

Answer 22

Exocrine gland that secretes via vesicles, lacrimal, salivary, gastric, pancreatic and eccrine sweat glands.

Question 23

Holocrine Glands

Answer 23

Exocrine gland, entire cell disintegrates

Question 24

Apocrine Glands

Answer 24

Secrete by decapitation, mammary and apocrine seat glands

Question 25

3 Types of Mesenchyme Connective Tissue

Answer 25

Embryonic origin: Connective tissue proper, supporting connective tissue, and fluid connective tissue.

Question 26

What is included in the Integument

Answer 26

Epidermis, epithelial tissue and avascular, Dermis, connective tissue and vascular. (Not the hypodermis)

Question 27

Layers of epidermis

Answer 27

Can Loud Girls Sing Bass, Corneum, Lucidum, Granulosum, Spinosum, Basale. Lucidum is only a part of thick skin regions.

Question 28

Keratinocytes

Answer 28

produces keratin, found in all layers, most abundant.

Question 29

Epidermal Dendritic Cells (Langerhans Cells)

Answer 29

macrophages, immune response, found in spinosum

Question 30

Tactile Cells are also called?

Answer 30

Merkel Cells sensory receptors found in basale layer

Question 31

Melanocytes

Answer 31

produce melanin, basale

Question 32

mole or birth marks are caused by what?

Answer 32

Over growth of melanin-forming cells.