Histology

Question 1

Histology

Answer 1

Study of tissue

Question 2

Epithelial tissue:

4 general characteristics

Answer 2

1. Covers all body surfaces
2. Major tissue of glands
3. Reproduce rapidly (vascular underlaying connective tissue)
4. Tightly packed

Question 3

Epithelial tissue structure

Answer 3

One side free or lumen, other side attached to connective tissue by basement membrane.

Question 4

Simple vs. stratified

Answer 4

Simple: one layer
Stratified: many layers

Question 5

Squamous vs. cuboidal vs. columnar

Answer 5

Squamous: thin and flat; squished
Cuboidal: cube shaped
Columnar: elongated; column

Question 6

4 types of tissue

Answer 6

Epithelial
Muscular
Nervous
Connective

Question 7

Simple squamous

Answer 7

Diffusion and filtration

Air sacs, walls of capillaries, inside blood and lymph vessels

Question 8

Simple cuboidal

Answer 8

Secretion and absorption

Ovaries kidney gland ducts

Question 9

Idk

Answer 9

Absorption
Digestive tract
Microvilli and goblet cells

Question 10

Psuedostratified columnar

Answer 10

Trap and move foreign particles and sex cells
Respiratory and reproductive passage. Ovaduct and trachea
Cilia

Question 11

Stratified squamous

Answer 11

Keratinized: dry. Skin

Non k: moist. Esophagus, mouth, vagina

Question 12

Transitional

Answer 12

Changes, squamous and cuboidal depending on stretching
Expandable lining and barrier
Ureters, urinary bladder, urethra

Question 13

Skeletal

Answer 13

Long, cylindrical, multinucleate cells, striations

Voluntary

Question 14

Cardiac

Answer 14

Branching, striated, uninucleate cells

Involuntary

Question 15

Smooth

Answer 15

Spindle shaped w central nucleus, no striations, cells arranged closely to form sheets
Propels substances along internal passageways
Involuntary
Walls of hollow organs

Question 16

Connective tissue

Answer 16

Found everywhere

1. Binds body tissue together
2. Supports body
3. Protection

Question 17

Connective tissue characteristics (3)

Answer 17

Come from mesenchyme
Variations in blood supply
3 components
-ground substance: h2o, proteins, polysaccharides
-fibers: produced by fibroblasts (collagen, elastic,reticular)
-cells

Question 18

Areolar

Answer 18

Gel like matrix w all 3 fiber types, cells, fibroblasts, macrophages, mast cells, some white blood cells
Wraps and cushions organs. IMPORTANT IN INFLAMMATION
packs organs supports capillaries

Question 19

Adipose

Answer 19

Closely packed, fat cells, some have nucleus pushed to the side
Reserve food fuel. Insulates against heat loss; supports and protects organs
Under skin, around kidneys, eyeballs, abdomen, breasts

Question 20

Reticular

Answer 20

Reticular fibers, regular cells lie on network
Supports other cell types (white, mast, and macrophages)
SPLEEN bone marrow

Question 21

Dense regular

Answer 21

Parallel collagen fibers, few elastin, fibroblasts
Attaches muscles to bone, muscles to muscles, bone to bone; with stands great force when force applied in one direction
Tendons, most ligaments, aponeuroses

Question 22

Dense irregular the best

Answer 22

Irregularly arranged collagen fibers, some elastic, fibroblasts
Withstand tension exerted in many directions
Dermis of the skin, submucosa of digestive tract, fibrous capsules of organs and joints

Question 23

Hyaline

Answer 23

Amorphous but firm. Collagen fibers form imperceptible network, chondroblasts produce matrix
Supports and reinforces, cushioning properties
Embryonic skeleton, covers ends of long bones in joint cavities, ribs, nose, trachea, larynx

Question 24

Elastic

Answer 24

Similar to hyaline but more elastic fibers
Maintains shape of structure w great flexibility
External ear and epiglottis

Question 25

Fibrocartilage

Answer 25

ICE CREAM SANDWICH
less firm than hyaline, thick collagen fibers
Tensile strength w ability to absorb compressive shock
Intervertebral discs, pubic symphysis, knee joint

Question 26

Bone

Answer 26

Hard. Calcified, lots of collagen, vascularized

Supports and protects, levers for muscles, stores calcium and fat

Question 27

Blood

Answer 27

Red and white blood cells
Transport respiratory gases, nutrients, wastes, ect.
Blood vessels