integumentary and nervous

Question 1

What are the three layers of the skin?

Answer 1

epidermis, dermis, hypodermis

Question 2

epidermis

Answer 2

stratified squamous epithelium
keratinized
avascular

Question 3

dermis

Answer 3

deeper connective tissue layer
made of collagen
houses hair follicles and nail roots

Question 4

hypodermis

Answer 4

adipose tissue
energy reservoir
thicker in women

Question 5

thick skin

Answer 5

Covers the palms of the hands and soles of the feet
Has five layers of keratinocytes
only has sweat glands

Question 6

thin skin

Answer 6

covers rest of the body

possesses hair follicles, sebaceous glands and sweat glands

Question 7

free edge

Answer 7

overhangs the fingertip

Question 8

nail body

Answer 8

visible part of the nail

Question 9

nail root

Answer 9

extends proximally under overlying skin

Question 10

apocrine glands

Answer 10

• attached to hair follicles
• inactive until puberty
• located in armpaits

Question 11

eccrine glands

Answer 11

on hairless areas of the body

Question 12

sebum

Answer 12

the oily secretion of the sebaceous glands

Question 13

basal cell carcinoma

Answer 13

most common, least dangerous, forms from cells in stratum basal

Question 14

squamous cell carcinoma

Answer 14

affects squamous cells, can metastasize

Question 15

malignant melanoma

Answer 15

from melanocytes, less than 5% of skin cancers, fatal if metastasizes

Question 16

central nervous system

Answer 16

brain and spinal cord

Question 17

peripheral nervous system

Answer 17

connects all nerves to CNS

-has two parts: somatic and autonomic

Question 18

afferent fibers

Answer 18

deliver messages to the CNS

Question 19

efferent fibers

Answer 19

carry out impulses to the organs

Question 20

somatic nervous system

Answer 20

voluntary movement

Question 21

autonomic nervous

Answer 21

involuntary movement

-has two parts: sympathetic and parasympathetic

Question 22

sympathetic nervous

Answer 22

fight or flight

Question 23

parasympathetic

Answer 23

constant resting actions

Question 24

hypothalamus

Answer 24

related to autonomic nervous, works w/ thalamus in response to pain, hunger, and other hormones

Question 25

amygdala

Answer 25

aggression center, feelings of anger, violence, and anxiety are produced here

Question 26

hippocampus

Answer 26

converts short-term memory to long-term memory

Question 27

cell body

Answer 27

host to nucleus

Question 28

dendrites

Answer 28

receive signals

Question 29

axons

Answer 29

covered in myelin sheath, electrical impulses travel through here