Lab Exercise 3: Tissues and Skins

Question 1

If cells in epithelial tissue are arranged in a single layer, this is called a(n)

Answer 1

simple arrangement

Question 2

If the cells are in multiple layers, this is called a(n)

Answer 2

stratified arrangement

Question 3

In a(n) ______ arrangement, the cells are actually in a single layer but falsely appear to be layered.

Answer 3

pseudostratified

Question 4

A group of similar cells that performs a specialized function is called a(n)

Answer 4

tissue

Question 5

In connective tissues the cells are widely spaced. The extracellular matrix consists of protein fibers and a ________ of variable consistency (fluid to solid).

Answer 5

ground substance

Question 6

The extracellular matrix of connective tissues often contain collagen and/or elastic fibers, which are produced by a fixed cell called a(n)

Answer 6

fibroblast

Question 7

which tissues are characterized by cells that are either squamous (broad and flat), cuboidal, or columnar in shape.

Answer 7

epithelial

Question 8

which tissues bind organs together and provide support

Answer 8

connective

Question 9

A specialized type of leukocyte that leaves the circulation and becomes a wandering cell in connective tissues, providing defense against infection, is a(n)

Answer 9

macrophage

Question 10

____ tissues are capable of shortening and thickening. Some types are characterized by light and dark cross-markings called _____.

Answer 10

muscle, striations

Question 11

which tissues are always found covering a surface or lining an organ and lack blood vessels. The tissue is bound to underlying connective tissue by a non-cellular substance called the basement membrane.

Answer 11

epithelial

Question 12

The outermost layer of epidermis consisting of keratinized cells is called the

Answer 12

stratum corneum

Question 13

what is the layer of skin comprised primarily of areolar connective tissue and irregular dense fibrous connective tissue.

Answer 13

dermis

Question 14

Technically not a layer of the skin, the ________ is the region beneath the dermis consisting of loose fibrous connective tissue and adipose tissue.

Answer 14

subcutaneous layer or hypodermis

Question 15

The layer of epidermis characterized by cells with shriveled nuclei is the

Answer 15

stratum granulosum

Question 16

Sweat glands, properly called ________ are a secretory accessory structure involved in body temperature regulation.

Answer 16

eccrine glands

Question 17

The actively reproducing layer of epidermal cells adjacent to basement membrane is the

Answer 17

stratum basale .

Question 18

what is the outermost layer of skin and is comprised entirely of stratified squamous epithelium

Answer 18

epidermis

Question 19

The accessory structure that changes the position of hair in response to emotions or temperature is the

Answer 19

arrector pili muscle

Question 20

Hairs develop at the base of a tube-like depression, called the _______ extending from the epidermis down into the dermis.

Answer 20

follicle

Question 21

Accessory structures associated with hair follicles that secrete oils are

Answer 21

sebaceous glands

Question 22

The layer of epidermal cells characterized by large, oval nuclei is the

Answer 22

stratum spinosum

Question 23

Accessory structures active in response to various emotions are _______ .These are commonly found in the axillary region.

Answer 23

apocrine glands

Question 24

The layer of epidermis in which the cells appear clear and the cell organelles are no longer visible is the

Answer 24

stratum lucidum