Sensory Organs

Question 1

Essential for hearing and maintaining balance (vestibular function).

Answer 1

Ears

Question 2

It allows us to experience the pleasures of eating and
drinking, and it helps identify potentially harmful substances.

Answer 2

Tongue

Question 3

Bony Labyrinth: Filled with ________

It is a watery fluid that surrounds the membranous labyrinth, providing physical support and protection to the delicate structures within the inner ear.

Answer 3

Perilymph

Question 4

These receptors are responsible for detecting changes in temperature.

Answer 4

Thermoreceptors

Question 5

These receptors are found in tendons, muscles, and joint capsules. This location in the body allows these special cells to detect changes in muscle length and
muscle tension.

Answer 5

Proprioceptors

Question 6

Structures included in the cochlear system

Answer 6

Cochlea
Organ of Corti
Cochlear Duct
Cochlear Nerve

Question 7

The outer covering of the eyeball consists of a relatively tough, white layer

Answer 7

Sclera (white of the eye)

Question 8

The _____—the circular, colored area of the eye that surrounds the pupil—controls the amount of light that enters the eye.

Answer 8

iris

Question 9

This is much thicker than the dermis and richly
supplied with lymphatic and blood vessels and nerve

Answer 9

Hypodermis

Question 10

These receptors exhibit sensitivity towards mechanical stimuli, including pressure, vibration, and stretch.

Answer 10

Mechanoreceptors

Question 11

Membranous Labyrinth: Filled with _______

This fluid has a high concentration of potassium ions and plays a vital role in transmitting electrical signals in the inner ear

Answer 11

Endolymph

Question 12

The size of the pupil is controlled by the action of the _________ muscle and ______ muscle.

Answer 12

pupillary sphincter
dilator

Question 13

Involved in the sense of taste and the detection of different flavors

Answer 13

Tongue

Question 14

These three fluid-filled tubes detect rotational movement of the head.

Answer 14

Semicircular canals

Question 15

The ________ in the retina convert the image into electrical signals, which are carried to the brain by the optic nerve.

Answer 15

photoreceptors

Question 16

The ______ contains the cells that sense light (photoreceptors) and the blood vessels that nourish them.

Answer 16

retina

Question 17

They allow us to see and process images, providing information about our surroundings.

Answer 17

Eyes

Question 18

[OUTER EAR]

It is important for sound gathering and localization
of sound

Answer 18

Pinna

Question 19

_____ are more numerous than ______and much more sensitive to light

Answer 19

Rods, cones

Question 20

After passing through the cornea, light travels through the ______ (the black dot in the middle of the eye)

Answer 20

pupil

Question 21

Responsible for vision and the perception of light and color.

Answer 21

Eyes

Question 22

It protects us from physical harm and plays a vital role in our ability to feel and interact with the world.

Answer 22

Skin

Question 23

It enables us to detect and interpret sound waves, facilitating communication and situational awareness.

Answer 23

Ears

Question 24

A thin, transparent membrane near the front of the eye, in the area protected by the eyelids that covers the sclera, covering the moist back surface of the eyelids and eyeballs

Answer 24

Conjunctiva

Question 25

Structures included in the vestibular system

Answer 25

Semicircular Ducts and canals Utricle and Saccule Vestibule Vestibular nerve

Question 26

The body's largest sensory organ, responsible for touch, temperature, and pressure sensations.

Answer 26

Skin

Question 27

The bony cavity that contains the eyeball, muscles, nerves, and blood vessels, as well as the structures that produce and drain tears. Each of this is a pear-shaped structure that is formed by several bones.

Answer 27

Eye socket (orbit)

Question 28

Sealed by the secondary tympanic membrane (round window membrane), which vibrates with opposite phase to vibrations entering the inner ear through the oval window

Answer 28

Round Window

Question 29

What are the three ossicle bones?

Answer 29

malleus, incus, stapes

Question 30

_____ are responsible for sharp, detailed central vision and color vision and are clustered mainly in the macula.

Answer 30

Cones

Question 31

These receptors detect potentially harmful stimuli that can cause damage to the skin and tissues, such as extreme heat or cold, excessive pressure, and chemicals.

Answer 31

Nociceptor

Question 32

Protection, amplification, and sound localization are the main functions of the _______ ear

Answer 32

outer

Question 33

The OUTER ear consists of (3 structures)

Answer 33

pinna ear canal eardrum

Question 34

These structures detect linear movements and head position relative to gravity.

Answer 34

Utricle and Saccule

Question 35

Outermost layer of the skin consisting of stratified squamous epithelium

Answer 35

Epidermis

Question 36

Normally, the __________ is produced in the posterior chamber, flows slowly through the pupil into the anterior chamber, and then drains out of the eyeball through outflow channels located where the iris meets the cornea.

Answer 36

aqueous humor

Question 37

[OUTER EAR] It vibrates in response to sound/pressure change

Answer 37

Eardrum/tympanic membrane

Question 38

Three layers of the skin

Answer 38

Epidermis Dermis Hypodermis

Question 39

Two major muscles in the MIDDLE EAR

Answer 39

stapedial muscle, tensor tympani

Question 40

Two types of photoreceptors

Answer 40

Cone and rods

Question 41

Three major divisions of the ear

Answer 41

outer middle inner

Question 42

Major divisions of the INNER ear based on FUNCTION

Answer 42

Vestibular System Cochlear System

Question 43

Two major divisions of the inner ear based on location

Answer 43

Bony Labyrinth Membranous Labyrinth

Question 44

Behind the iris sits the ______. By changing its shape, the lens focuses light onto the retina.

Answer 44

lens

Question 45

The greater part of the skin “true skin”

Answer 45

Dermis

Question 46

These are grouped mainly in the peripheral areas of the retina, which are responsible for night and peripheral (side) vision.

Answer 46

Rods

Question 47

An opening with a membrane covering that resides in the middle ear and helps transmit vibrations into traveling waves.

Answer 47

Oval Window

Question 48

This spiral-shaped structure is responsible for converting sound vibrations into electrical signals that can be interpreted by the brain.

Answer 48

Cochlea

Question 49

It is composed of sensory hair cells that bend in response to vibration. Bending action converts mechanical energy to electrical signals.

Answer 49

Organ of Corti

Question 50

It is a muscular organ situated in the floor of the mouth used for taste, speech, mastication and deglutition

Answer 50

Tongue

Question 51

The central part of the bony labyrinth, it is involved in sensing balance

Answer 51

Vestibule

Question 52

[OUTER EAR] It is important for sound selection

Answer 52

Ear canal/auditory meatus

Question 53

The back section (posterior segment) extends from _________. It contains a jellylike fluid called the vitreous humor

Answer 53

the back surface of the lens to the retina

Question 54

It allows more light into the eye (enlarging or dilating the pupil) when the environment is dark and allows less light into the eye (shrinking or constricting the pupil) when the environment is bright.

Answer 54

Iris

Question 55

Located within the semicircular canals, these ducts detect rotational movement

Answer 55

Semicircular Ducts

Question 56

_______ organs are crucial for perceiving and interpreting the external world.

Answer 56

Sensory

Question 57

This structure, located within the cochlea, houses the organ of Corti (the sensory organ for hearing).

Answer 57

Cochlear Duct

Question 58

Structures in the INNER ear

Answer 58

Bony labyrinth Membranous Labyrinth Vestibular System Cochlear System

Question 59

It is filled with a fluid called the aqueous humor, which nourishes the internal structures. The anterior segment is divided into two chambers

Answer 59

Eyeball

Question 60

The most sensitive part of the retina is a small area called the ________, which has millions of tightly packed photoreceptors (the type called cones).

Answer 60

macula

Question 61

It lies beneath the dermis which is composed of loose, fibrous, areolar and adipose tissue.

Answer 61

Hypodermis

Question 62

Through the action of small muscles (called the ciliary muscles), the lens becomes ______ to focus on nearby objects and _____ to focus on distant objects.

Answer 62

thicker; thinner

Question 63

The ______ serves as a protective covering for the front of the eye and also helps focus light on the retina at the back of the eye.

Answer 63

cornea

Question 64

The MIDDLE ear consists of (3 main structures in this part)

Answer 64

*three ossicle bones; (malleus, incus, stapes) *two major muscles (stapedial muscle, tensor tympani) *Eustachian tube

Question 65

Each photoreceptor is linked to a nerve fiber. The nerve fibers from the photoreceptors are bundled together to form the_____ nerve

Answer 65

optic

Question 66

The front (anterior) chamber of the eyeball extends from the__________. The back ((posterior) chamber extends from the ______.

Answer 66

cornea to the iris iris to the lens

Question 67

Light enters the eye through the _________ , the clear, curved layer in front of the iris and pupil.

Answer 67

cornea