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Flashcards in Senses** Deck (58)
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1

The sense of smell supplements the sense of ________.

Taste

2

Epithelial cells; free ends extend between epithelial cells. Sense itching

Free nerve endings

3

Small oval masses of flattened connective tissue; detects changes in pressure or movement

Meissner's corpuscles (mechanoreceptors)

4

Composed of connective tissue and nerve fibers; Found in deep dermal and subcutaneous tissue; responds to pressure

Pacinian corpuscles

5

Responds to temperature

Temperature Senses

6

Detects tissue damage

Pain receptors

7

What is the pathway for smell?

Smell receptor, cilia, axon, olfactory bulb, olfactory tract, limbic senses, thalamus

8

How does saliva contribute to the perception of taste?

Chemicals must be dissolved in water in order to be tasted

9

Describe the nerve pathway for taste

Travels on the facial, glossopharyngeal, and vagus nerves. They then travel to the medulla and cerebrum

10

What is the function of the external ear?

Collect sound waves and produces vibrations of the sound wave

11

Describe the hearing pathway

Sound waves enter the external auditory meatus, sound waves cause the eardrum to vibrate, vibrations are carried across the middle ear by the malleus, incus, stapes to the oval window. Vibrations cause the stapes to move in and out causing the cochlea to move. Tiny fibers cause a vibration in the hearing receptors which stimulate the nerves. The nerves send messages to the temporal lobe where sounds are interpreted.

12

Why does it help to chew gum while descending on an airplane?

Makes the pressure in ear at equlibrium

13

What is the function of the inner ear?

Transfer sound waves/ vibrations and to maintain equlibrium

14

What are the 4 layers of the eyelid?

Skin, muscle, connective tissue, conjunctiva

15

Which muscles move the eyelid?

Ocularis oculi and Levator palpebrae

16

A mucous membrane that lines the inner surfaces of the eyelids and folds back to cover the anterior surface of the eyeball

Conjunctiva

17

Function is to moisten and lubricate the surface of the eye and lining of the lids

Lacrimal apparatus

18

What is the lacrimal apparatus consist of?

Lacrimal glands and a series of ducts that carries tears into the nasal cavity

19

Antibacterial agent which reduces the risk of eye infections

Lysozyme

20

Rotates eye upwards and toward midline

Superior/inferior rectus

21

Rotate eye towards midline

Medial/lateral rectus

22

Rotate eye downward and away from the midline

Superior/inferior oblique

23

Absorb light (doesn't differentiate color, only shades of gray)

Rods

24

Where are rods present?

Peripheral areas of retina

25

Absorb light of particular wavelength (red, green, blue)

Cones

26

Where are cones present?

Fovea area

27

Light absorbing pigment consisting of opsin and retinal

Rhodopsin

28

Detect light energy

Photoreceptors

29

Describe the nerve pathway for smell

When olfactory receptors are stimulated, their fibers synapse with neurons in the olfactory lobes. Sensory impulses are first analyzed here and then down the olfactory tract to the limbic system and to the temporal lobe

30

The whites of the eyes; functions as protective and supportive layer and an area for extrinsic muscle attachment

Sclera