Science - Human Anatomy and Physiology (Excretion, Reproduction, Senses)

Question 1

what are the principal excretory organs of the body?

Answer 1

kidneys

Question 2

what is the functional unit of the kidney?

Answer 2

nephron

Question 3

what does the nephron consist of?

Answer 3

glomerulus, bowman’s capsule, proximal convuluted tubule, loop of henle, distal convuluted tubule

Question 4

what is the concentrated mixture of wastes that is left in the tubules after circulation through the kidneys?

Answer 4

urine

Question 5

what are three other functions or organs that are involved in the excretion

Answer 5

sweat glands, lungs and liver

Question 6

seminiferous tubules

Answer 6

where sperm is made

Question 7

interstitial cells

Answer 7

produces male sex hormones

Question 8

epididymis

Answer 8

holds sperm while it matures

Question 9

what is the route of ejaculation

Answer 9

vas deferens, ejaculatory duct, urethra

Question 10

oocyte

Answer 10

immature egg

Question 11

cornea

Answer 11

allows light to enter the eye

Question 12

iris

Answer 12

color of eye, regulates how much light is allowed to enter pupil

Question 13

lens

Answer 13

focuses light onto retina

Question 14

retina

Answer 14

innermost layer of the eyeball

Question 15

what are the two photoreceptor cells that are inside the eyeball?

Answer 15

rod cells and cone cells

Question 16

rod cells

Answer 16

sensitive to light, allow us to see at night

Question 17

cone cells

Answer 17

distinguish color

Question 18

when they are stimulated by light, the photoreceptor cells transmit the information along the ____ to the brain

Answer 18

optic nerve

Question 19

what are the three regions of the ear?

Answer 19

outer, middle and inner

Question 20

what part of the ear collects sounds and transmits them to the tympanic membrane?

Answer 20

outer

Question 21

what is the tympanic membrane

Answer 21

separates the outer ear from the middle ear

Question 22

what three bones in the middle ear allow for vibrations to be transmitted

Answer 22

malleus, incus and stapes

Question 23

what is the eustachian tube

Answer 23

opens into the pharynx

Question 24

what does the eustachian tube do

Answer 24

equalizes pressure between middle ear and the atmosphere

Question 25

what region of the ear has many channels containing fluid that moves in response to your movement or to sound?

Answer 25

inner

Question 26

cochlea

Answer 26

part of the inner ear that allows conversation of movement into signals or action potentials