Biolab 9: HIstology I

Question 1

histotechnology

Answer 1

science that deals with the preservation of histological sections, they are prepared by treating the tissue with specfic routine

Question 2

microtome

Answer 2

apparatus used to cut or shave the tissue into small sections

Question 3

the process to get a piece of tissue ready

Answer 3

the tissue is preserved using a reagant, usually formaldehyde,

• now the tissue is embedded and infiltrated with parrafin wax
• makes it stiff and easier to cut, now the microtome is used to cut or shave very small pieces
• the sections are mounted indicidually on glass slides
• the wax is dissolved away by multiple baths and then the tissue is immersed in a series of stains
• stain provides contrasts between different parts of the

Question 4

tissue hierarchal

Answer 4

atoms join together to form molecules
molecoles join together to form cellular organelles
cellular organelles join together to form cell
cells form tissues
tissues form organs
organs form organism

Question 5

tissue

Answer 5

group of cells with a common structure and function

Question 6

tissues categorized into 4 groups

Answer 6

epithelial,connective, muscular and nervous

Question 7

epithelial

Answer 7

occurs in sheets of tightly packed cells which cover the external body and line the body cavities as well as blood vessels, ducts,

Question 8

free surface

Answer 8

the side of the epithelial cells that is in contact with the air or fluid

Question 9

basement membrane

Answer 9

non -fres surface sie of the epithelial cells that is attached to the basement membrane

Question 10

squamous

Answer 10

flat cells in epithelial

Question 11

cuboidal

Answer 11

are square shaped

Question 12

columnar

Answer 12

cylindrical shaped

Question 13

simple

Answer 13

epithelium has one cell layer

Question 14

stratified

Answer 14

if it has multiple cell layers

Question 15

pseudostratified epithelium

Answer 15

type of columnar epithelium, whose cells are of different length and width

Question 16

alveolar sacs

Answer 16

composed of groups of alveoli clustered around a common air space

Question 17

simple squamous epithelium

Answer 17

have thin walls

Question 18

ciliated pseudostratified epithelium

Answer 18

what the trachea is lined with, cilia propel teh mucus toward the throat