Tissues

Question 1

Functions of Epithelial Tissue

Answer 1

This tissue includes functions like; protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception

Question 2

Simple squamous epithelium

Answer 2

A single layer of flattened cells

Question 3

Simple cuboidal epithelium

Answer 3

A single layer of cells, but the cells are in the shape of cubes

Question 4

Simple columnar epithelium

Answer 4

A single layer of long columnar (think vertical) cells

Question 5

Basement membrane

Answer 5

A thin sheet-like extracellular structure that forms a barrier between cells and connective tissues

Question 6

What is Ciliated pseudostratified columnar epithelia and what does it do?

Answer 6

A type of respiratory epithelium found in the linings of the trachea as well as other respiratory tracts, which allows filtering and humidification of incoming air

Question 7

Stratified squamous epithelium

Answer 7

Many layers of flattened cells (ex: epidermis of the palm of hand and sole of the foot)

Question 8

What are the two major subtypes of stratified squamous epithelium, and where are they found?

Answer 8

Keratinized epithelium: found on the skin and is toughened by the protein keratin (ex: sole of the foot)
Nonkeratinized stratified squamous epithelium: found in the oral cavity and vagina and is a mucous membrane (ex: buccal cavity)

Question 9

Transitional epithelium

Answer 9

A type of stratified epithelium that changes shape in response to stretching (ex: lines urinary tract and bladder). Transitional epithelium usually appears cuboidal when relaxed and squamous when stretched

Question 10

Exocrine glands

Answer 10

Glands that will secrete substances through ducts or an opening to the body surface, like sweat glands, mammary glands, tear ducts, and salivary glands

Question 11

Endocrine glands

Answer 11

Glands that secrete their substances directly into the bloodstream, so ductless glands. These glands secrete hormones into the blood stream

Question 12

Goblet cells

Answer 12

They’re in the epithelium and secrete mucus, which lubricates

Question 13

Vesicles

Answer 13

Tiny sacs that transport material within or outside the cell, think of shipping boxes. The product you bought is the liquid material and the box carrying the product is the phospholipid bilayer

Question 14

Merocrine glands

Answer 14

A type of exocrine gland in with the secretory products are released without resulting in any damage to the cell (ex: salivary and swear glands)

Question 15

Aprocrine glands

Answer 15

The portion pinches off from the rest of the cell to release the secretion (ex: mammary glands)

Question 16

Holocrine glands

Answer 16

The whole cell disintegrates so the entire cell breaks down to release what’s called sebum (ex: sebaceous glands)

Question 17

Connective tissue

Answer 17

Is made up of cells, fibers, and a gel-like substance. This tissue supports, protects, and gives structure to other tissues and organs in the body.

Question 18

Mesenchyme

Answer 18

Is made up of clusters of cells grouped together but not closely adherent to one another. They synthesize a highly hydrated gel, rich in salts, fluid, and fibres, known as the interstitial matrix. Connective tissue is a mesenchyme that fastens together other more.

Question 19

Loose connective tissue

Answer 19

Found wrapping around organ or under the epidermis and is composed of collagenous, elastic, and reticular fibers