A&P

Question 1

Histology

Answer 1

the study of tissues

Question 2

Tissue

Answer 2

a group of cells that act together to perform specific functions

Question 3

4 fundamental tissues

Answer 3

epithelial, connective, muscle, and nerve tissues

Question 4

Epithelial cells

Answer 4

cover, line, and protect the body and its internal organs

Question 5

Connective tissue

Answer 5

the framework of the body, providing support and structure for the organs

Question 6

Nerve tissue

Answer 6

Composed of neurons and connective tissue cells that are referred to as neurolglia

Question 7

Muscle tissues have the ability to

Answer 7

contract and shorten

Question 8

Muscle tissue classified as

Answer 8

voluntary muscle (skeletal) or involuntary muscle (smooth and cardiac)

Question 9

The cell

Answer 9

is the basic unit of life and the building block of tissues and organs

Question 10

Mitosis

Answer 10

necessary for growth and repair; DNA is duplicated and distributed evenly to two daughter cells.

Question 11

Meiosis

Answer 11

cell division that takes place in the gonads; chromosome number is reduced from 46 to 23 so sperm + egg =zygote w correct # of chromosomes

Question 12

Largest organ of the body

Answer 12

skin

Question 13

Two layers of the skin

Answer 13

epidermis (outermost protective layer of dead keratinized epithelial cells) and the dermis

Question 14

Dermis rests on

Answer 14

the subcutaneous tissue that connects the skin to the superficial muscles

Question 15

Layers of dermis from outer to inner layer

Answer 15

stratum corneum, stratum lucidum, stratum granulosum, stratum germinativum-> stratum basale (mitosis) and starum spinosum

Question 16

Melanin

Answer 16

protein pigment found in epidermal cells which protects against radiation from the sun

Question 17

Dermis

Answer 17

inner layer of the skin composed of fibrous connective tissue with blood vessels, sensory nerve endings, hair follicles, and glands

Question 18

Two types of sweat glands

Answer 18

Eccrine: most widely distributed, regulate the body temp
Apocrine: in armpit and groin area, secretion contains bits of cytoplasm that attracts bacteria

Question 19

Sebaceous glands

Answer 19

release oily secretion (sebum) through hair follicles that lubricates the skin and prevents drying

Question 20

Oil is produced by

Answer 20

holocrine secretion in which whole cells of the gland are part of the secretion; glands susceptible to clogging

Question 21

Appendages of skin

Answer 21

hair and nails composed of strong protein called keratin