Lab Exam 2 Functions

Question 1

Hormones secreted by the anterior pituitary gland?

Answer 1

1. Luteinizing hormone
2. Thyroid- stimulating hormone
3. Growth hormone

Question 2

Hormones secreted by the posterior pituitary gland?

Answer 2

1. Oxytocin

2. Antidiuretic hormone (ADH)

Question 3

Hormones secreted by the thyroid gland?

Answer 3

1. T3
2. T4
3. Calcitonin

Question 4

Hormones secreted by the parathyroid gland?

Answer 4

1. Parathyroid hormone (PTH)

Question 5

Hormones secreted by the adrenal cortex ?

Answer 5

1. Cortisol
2. Androgens
3. Aldosterone

Question 6

Hormones secreted by the adrenal medulla?

Answer 6

1. Epinephrine
2. Norepinephrine
   ( both increases cardiac activity)

Question 7

Hormones secreted by the pancreatic islets of the pancreas?

Answer 7

1. Insulin (raises blood glucose levels)

2. Glucagon (lowers blood glucose levels)

Question 8

Hormones secreted by the thymus?

Answer 8

1. Thymosin (maturation of T lymphocytes)

Question 9

Hormones secreted by the pineal gland?

Answer 9

1. Melatonin (regulates circadian rhythm)

Question 10

Hormones secreted by the testes?

Answer 10

1. Testosterone (stimulates spermatogenesis)

Question 11

Hormones the follicular cells in the ovaries secret?

Answer 11

1. Estrogen

Question 12

Hormones secreted by the corpus luteumn the ovaries?

Answer 12

1. Progesterone

Question 13

Function of the olfactory neurons (chemoreceptors) ?

Answer 13

Detect odors

Question 14

Function of olfactory tracts?

Answer 14

Carry olfactory information to other parts of the brain

Question 15

Function of supporting cells?

Answer 15

Support and surround olfactory neurons

Question 16

Function of basal cells?

Answer 16

Replacement of olfactory neurons

Question 17

Function of primary olfactory cortex?

Answer 17

Awareness and identification of odor

Question 18

What is the function of the lacrimal gland?

Answer 18

Secrete a whitish lubricating substance

Question 19

What is the function of the tarsal glands?

Answer 19

Secretes oil to prevent eyelids from sticking together.

Question 20

What is the function of the tarsal plate?

Answer 20

Stiffen each eyelid

Question 21

What is the function of the eyelids?

Answer 21

Prevent objects from entering the eye and distribute tears across the eye when blinking

Question 22

What is the function of the eyebrows?

Answer 22

Prevent perspiration from running in the eyes

Question 23

What is the function of the eyelashes?

Answer 23

prevents debris from entering the eye

Question 24

What is the function of conjunctiva?

Answer 24

Lines posterior surface of the eyelids

Question 25

What is the function of the lacrimal apparatus?

Answer 25

Produces tears and drains them from the eyes

Question 26

What is he function of the sclera?

Answer 26

Maintain the shape of the eyeball

Question 27

What is the function of the cornea?

Answer 27

Admits light into the eye and focus it

Question 28

What is the function of the choroid?

Answer 28

Reduce the scattering of light

Question 29

What is the function of the suspensory ligaments?

Answer 29

Connects the ciliary body to the lens

Question 30

What is the function of the ciliary body?

Answer 30

Changes the shape of the lens to focus the light on the retina

Question 31

What is the function of the iris?

Answer 31

Determines the color of the eye

Question 32

What is the function of the pupil?

Answer 32

Allows light to enter the eye

Question 33

What is the function of vitreous humor?

Answer 33

Fluid that maintains the shape of the eyeball

Question 34

What is the function of the utricle and saccule (vestibule)?

Answer 34

Convey stimuli about the head tilting and linear movement; filled with endolymph

Question 35

What is the function of photoreceptor cells?

Answer 35

Specialized to detect the presence of light and produce a neural signal

Question 36

What is the function of the lens?

Answer 36

Focus light on the retina from objects near the eye

Question 37

Contains a large amount of photoreceptors (cones)

Answer 37

Macula lutea

Question 38

Contains a large amount of photoreceptors; located in the center of a yellowish region called the macula lutea

Answer 38

Fovea centralis

Question 39

Does not contain any photoreceptors and does not capture any visual image

Answer 39

Optic disc (blind spot)

Question 40

What is the function of the auricle?

Answer 40

Funnels waves into the external auditory canal

Question 41

What is the function of the external auditory canal?

Answer 41

Transfer sound from the auricle the the tympanic membrane (eardrum)

Question 42

What is the function of the tympanic membrane?

Answer 42

Transport sound from the air to the auditory ossicles inside the middle ear and then to the oval window in the fluid-filled cochlea; separates outer ear from the inner ear

Question 43

What is the function of the malleus?

Answer 43

Transports vibrations from the tympanic membrane to the incus

Question 44

What is the function of the incus?

Answer 44

Transports vibrations between the malleus and stapes

Question 45

What is the function of the stapes?

Answer 45

Transports vibrations from the incus to the oval window in the inner ear

Question 46

What are the sweat glands in the external auditory canal called and what do they do?

Answer 46

Ceruminous glands that secrete a yellowish-brown to gray cerumen (earwax)

Question 47

What is the function of cerumen (earwax)?

Answer 47

Lubricates and waterproofs the external auditory canal and tympanic membrane, traps debris from reaching the tympanic membrane and sweeps it out of the auditory canal.

Question 48

What is the function of the Pharyngotympanic tube (Auditory tube)?

Answer 48

Equalize pressure on both sides of the tympanic membrane

Question 49

What fluid is found in the membranous labyrinth?

Answer 49

Endolymph

Question 50

What is the fluid between the bony labyrinth and the membranous labyrinth?

Answer 50

Perilymph

Question 51

What is the function of Perilymph and endolymph?

Answer 51

Transduce sound waves and head movements into neural signals

Question 52

What are the two portions of the membranous labyrinth that the vestibule house?

Answer 52

Utricle and Saccule

Question 53

What is the function of the semicircular canals?

Answer 53

Detect rotation of the head

Question 54

What is the function of the ampulla?

Answer 54

Swelling on the ducts of the cochlear that contains receptor cells in contact with neurons

Question 55

What is the function of the cochlea?

Answer 55

Transports the vibrations of auditory sound into impulses the brain can interpret

Question 56

What is the function of the oval window?

Answer 56

Allow for pressure changes between the middle ear and cochlea

Question 57

What is the function of the round window?

Answer 57

Separates the middle and inner ear

Question 58

What are the three chambers of the cochlea?

Answer 58

Scala Vestibuli Scala Media ( cochlea duct) Scala Tympani

Question 59

What two chambers of the cochlea chamber contains Perilymph?

Answer 59

Scala Vestibuli and Scala Tympani

Question 60

What chamber of the cochlea contains endolymph?

Answer 60

Scala media (cochlear duct)

Question 61

What is the function of the vestibular membrane?

Answer 61

Seperates the endolymph and Perilymph

Question 62

Function of the basilar membrane?

Answer 62

Supports the organ of corti

Question 63

What is the function of the organ of corti?

Answer 63

Contains receptor cells for hearing

Question 64

What is the function of inner hair cells?

Answer 64

Detects sound

Question 65

What is the function of the tectorial membrane?

Answer 65

Makes the stereocilia bend

Question 66

Microvilli that project the hair cell; arranged from tallest to shortest

Answer 66

Stereocilia