Ch.4: Tissues, Epithelial Tissues

Question 1

Group of cells that are similar in structure and perform a common function

Answer 1

Tissue

Question 2

What are the four primary tissues?

Answer 2

Epithelial, Connective, Nervous, and Muscle

Question 3

Which primary tissue, is sheet of cells that covers a body surface or lines a body cavity

Answer 3

Epithelial Tissue

Question 4

The five distinguishing characteristics of the epithelial tissues are _______

Answer 4

apical surface, 
 microvilli or cillia, 
no intracellular space, 
avascular but innervated, 
high regenerative capacity (heal quicker)

Question 5

Consist of a single layer of cell layer. Found where absorption, secretion, and filtration occur

Answer 5

Simple Epithelia

Question 6

Composed of two or more cell layers, common in high abrasion areas where protection is important

Answer 6

Stratified Epithelia

Question 7

Single layer of flattened cells with dics-shaped central nuclei. Allows materials to pass by diffusion and filtration is sites where protection is not important. ex. Alveoli

Answer 7

Simple Squamous Epithelium

Question 8

Inner covering, provides a slick, friction- reducing lining in lymphatic vessels and hollow organs of the cardiovascular system—– blood vessels and the heart

Answer 8

Endothelium

Question 9

Middle covering, found in serous membranes, the membranes lining the ventral body cavity and covering its organs

Answer 9

Mesothelium

Question 10

Single layer of cube-like cells, secretion and absorption. Found in kidney tubules

Answer 10

Simple Cuboidal Epithelium

Question 11

Single layer of tall cells with some bearing cillia, layer may contain mucus-secreting unicellular glands (goblet cells) Function Absorption, secretion of mucus, enzymes and other substance

Answer 11

Simple Columnar Epithelium

Question 12

Most widespread of the stratified epithelial,Thick and well-suited for its protective role in the body. surface cells are flattened. Lining of the esophagus, mouth, vagina

Answer 12

Stratified Squamous epithelium

Question 13

Forms the linings of the hollow urinary organs , streches readily

Answer 13

Transitional epithelium

Question 14

What are the two types of Glandular Epithelia?

Answer 14

Endocrine gland & Exocrine gland

Question 15

Often called Ductless gland, produce hormones, secrete by exocytosis directly into the blood

Answer 15

Endocrine Gland

Question 16

Secrete their products onto body surfaces (skin) or into body cavities, contains ducts.includes mucous, sweat, oil and salivary glands and the liver, pancreas

Answer 16

Exocrine Gland

Question 17

The only important examples of unicellular glands are

Answer 17

Mucous cells and Goblet cells

Question 18

Type of multi cellular exocrine gland that secret their products by exocytosis as they are produced. Not altered in any way. “merely secrete” includes pancreas, sweat glands and salivary glands

Answer 18

Merocrine glands

Question 19

Type of multi cellular exocrine gland that accumulate their products within them until they rupture. Ex. Sebaceous gland (pimple)

Answer 19

Holocrine Glands