Biology Day 8

Question 0

Protection from pathogens and particultes

Answer 0

in lungs

Question 1

Thermoregulation

Answer 1

significant amount of heat is lost to expired air

Question 2

nose hairs and mucous

Answer 2

prevent pahtogens from reachign lungs

Question 3

goblet cells

Answer 3

secrete mucus lining in the respiratory tract

Question 4

cilia propel

Answer 4

mucus and pathogents

Question 5

macrophages in alveoli

Answer 5

phagoctose

Question 6

respiratoy system

Answer 6

pharynx, larynx, trachea, primary bronchi, bronchi, bronchioles, alveoli

Question 7

exchange surface

Answer 7

bronchioles/alveoli

Question 8

associated muscles, bones, of the thoraci cavity

Answer 8

diaphram, abdomianal muscles, intercostals, rib cae

Question 9

alveoli

Answer 9

air-filled sacs surrounded by cappliaries, thin walled with huge surface area, cated with surfactant(reduces tention),

Question 10

make up to 95% of alveolar walls and is the site of gas exchange

Answer 10

type I alveolar cells

Question 11

secrete surfactant

Answer 11

type II alveolar cells

Question 12

inspiration is caused

Answer 12

by Contraction of the diaphram

Question 13

the lungs are surrounded by

Answer 13

two plueral sacs

Question 14

diaphram is connected

Answer 14

to the outer pleural sac

Question 15

expansion of the lungs

Answer 15

LOWERS the presssure inside them

Question 16

the diaphram is innervated by

Answer 16

the somatic nervous system

Question 17

inspriation cna be

Answer 17

voluntary or involuntary

Question 18

expiration

Answer 18

passive elastic recoil of the lungs (resiliency)

Question 19

forced expiration involves

Answer 19

contraction of the abdominal and intercostal muscles.. noramlly experiation is involuntary

Question 20

Human skin

Answer 20

prevent loss of water, impermeable to water

Question 21

Skin, thermoregulation

Answer 21

heat retention, heat removal, physical protection, dermal layers,

Question 22

heat retention

Answer 22

hairs help with heat retention, errect when cold, hypodermis contains an insulating layer of adiipose tissue to prevent heat loss, vasocontriciton of the suface capillaries in the dermis minimizes heat loss

Question 23

heat removal

Answer 23

sweat glands in the dermis release sweat(water and salt), evaporation removes heat, vasodialiation of the suface capliarries in the dermis increases heat loss thorugh the skin,

Question 24

Physical protection,

Answer 24

skin protects form pathogens, fingernals and toe nales, made of kertin, protect ends, callus build up protects areas more prone to abrasion

Question 25

dermal layers

Answer 25

Epidermis, composed of stratified squamous,
Dermis- composed of loose connective tissue, contains blood vessels, never ending and exocrine glands
Hypodermis- contains adipose tissue for insulation