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Sensory Organs
Dr.Timothy Reichards Exam #2 For VET 117 *Sensory Organs*
38
Veterinary Medicine
Not Applicable
03/24/2011

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Cards

Term

Which are true about sense organs?

 

A. Are extensions of the CNS

 

B. Monitor what is going on inside & outside animal

 

C.Contain specially modified nerve endings called sensory receptors

 

D. All of the above

Definition
D. All of the above are true about sense organs
Term

Match stimuli with sensory receptor:

 

__ Mechanical             A. Taste and smell

           __Thermal                B. Touch, hearing, & balance

__Electomagnetic             C. Hot and Cold

__Chemical                             D. Vision

Definition

Mechanical = Touch, hearing, and balance

 Thermal = Hot and Cold

Electromagnetic = Vision                        

Chemical = Taste and smell

Term

List four of the five general senses

 

Definition
  • Visceral        
  • Pain             
  • Temperature  
  • Proprioception
Term

Which of the following is not tue about the general senses?

A.) They are generally distributed throughout the body

B.) They are designed to keep body informed about overall conditions inside and outise the body

C.) The receptors associated with these senses are very complex in structure

D.) Are rarely involved in clinical disease treatment

Definition
C.) The structures are not Very complex
Term

The slit-like opening of the eustachian tube is located here:

A. Under the tongue

B. Pharynx

C. Roof of mouth

D. Inside cheek

Definition
B. Pharynx
Term

This structure acts as a pressure relief mechanism by alternately bulging in and out as the fluid moves back and forth.

A. Oval window

B. Tectorial membrnace

C. Round window

D. Tensor tympani

Definition
C. Round Window
Term

The receptor organ of hearing is :

A. Cochlea

B. Organ of corti

C. Tympanic membrane

D. Basilar membrane

 

Definition
B. Organ of Corti
Term

The osicles are located here:

A. inner ear

B. Outer ear

C.Pinna        

D. Middle Ear

Definition
D. Middle Ear
Term

This type of joint exists between the malleus and incus and the incus and the stapes:

A. Synovial

B. Fibrous

C. Suture

D. Cartilaginous

Definition
A. Synovial
Term

This structure is thought to enhance vision in dim light in animals except pigs

A. Cornea

B. Retina

C. Tapetum Lucidum

D. Choroid

Definition
C. Tapetum Lucidum
Term

This ring-shaped structure immediately behind the iris contians muscles that adjust the shape of the lens:

 

A. Limbus

B. Sclera

C. Ciliary Body

D. Canal of Schlemm

Definition
C. Ciliary Body
Term

Which is true regarding the eye?


A. Distance vision requires muscle contractions in the ciliary body

B. The front surface of the lens is in contact with the vitreous humor

C. The innermost layer of the eye is the uvea

D. The junction of the cornea and sclera is the limbus

Definition
D. The junction of the cornea and the scleara is the limbus
Term

Which is false?

A. The innermost layers of the retina are transparent to light

B. The photoreceptor cells are the innermost layer of the retina

C. Nerve fibers on the inside of the retina converge at the optic disc

D. Domestic animals are not color blind.

Definition
B. Photoreceptor cells are the innermost layer of the retina
Term

This structure is responsible for most of the reflective work of the eye

 

A. Vitreous body

B. Aqueous body

C. Cornea          

D. Lens

Definition
C.Cornea
Term

The conjunctival sac is:


A. A useful place to deposit ophthalmic medicine

B. A & D

C. The space between the palpebral conjunctiva & Cornea

D. Only a potential space moistend by tears

Definition

B.

A & D

Term

This structure contains a "T" shaped cartilage and its inner surface has lymph nodules and an accessory lacrimal gland

A. 3rd eyelid

B. Meibomian Gland

C. Tarsal Gland

D. Palpebral conjunctiva

Definition

A. 3rd eyelid

 

Also known as nictitating membrane

Term

The inner mucous layer of tears is produced by:

A. meibomian glands

B. Tarsal glands       

C. 3rd Eyelid            

D. Conjunctival Cells

Definition
D. Conjunctival cells
Term

Matching:

 

A. Macule                     1. This is the blind spot of the eye

B. Optic Disk                 2. Sensory epithelium found on utricle & sacule

C. Lacrimal Aparatus       3. Pain Receptors

D. Nociceptors               4. Structures that produce & drain tears

Definition

A = 2.

B = 1.

C = 3.

D = 4.

Term

Matching:

E. Eustachian Tube         1. Receptors are located in taste buds

F. Malleus                      2. Connects pharynx with middle ear

G. Vestibule                   3. Senses linear motion in position of head

H. Gustatory                  4. Bone attached to tympanic membrane

Definition

E = 2

F= 4

G = 3

H =1

Term

Matching:

I. Stapes                  1. The vascular layer of the eye

J. Sclera                   2. This sense provides knowledge of body position

K. Proprioception        3. Outer fibrous layer of the eye

L. Uvea                    4. Articulates w/ incus attach @ oval window

Definition

I = 4

J = 3

K = 2

L = 1

 

Term

Matching:

M. Semicircular canals              1. This sense includes hunger

N. Visceral                             2.Highly developed sense in animals

O. Olfactory                           3. Photoreceptors that work in the dark

P. Rods                                  4. Senses rotary motion of the head

Definition

M = 4

N = 1

O = 2

P = 3

Term

Matching:

Q. Cones                             1. Has receptors in hypothalamus and skin

R. Aqueous Humor                 2. Fluid behind lens and ciliary body

S. Vitreous Humor                 3. Fluid produced in aqueous compartment

T. Temperature                    4.  Photoreceptors More receptive to color

Definition

Q = 4

R = 3

S = 2

T = 1

Term
____ sensations are a miscellaneous category of interior body sensations and include hunger, thirst and hollow organ fullness
Definition
Visceral
Term
Stretch receptors in the intestinal tract sense the pain (from gas OR from cutting/crushing of tissue)
Definition
From gas
Term

True or False:

In many cases, the sensation of touch are detected at almost unconcious levels unless they become extreme

Definition
True
Term

True or False:

Pain receptors are found thorughout the body uncluding the brain

Definition

False:

There are no Pain receptors in the brain

Term

What is true about pain in nonhuman animals?

 

A. Appear to hide signs of pain

B. Hiding pain is a survival instinct

C. Visible reactions to pain very among species

D. Prevention & control of pain is very important in veterinary medicine.

E. All of the above are true

Definition
E. All of the above
Term

What is not true about proprioception?

A. Involved w/ body positioning

B. Operates on a concious level

C. Allows animal to stand upright and make purposul movements
D. Relies on variety of strech receptors located in skeletal muscle

E. Allows smooth movement

Definition
B. This is an unconscious function
Term

What is not true about taste & taste buds?

A. Chemicals are disolved in saliva

B. found on small elevated structures on the tongue

C. Tiny, round gustatory cells

D. Taste pores are present

E. Sensory receptors are tiny, hair like processes

F. Information is transmitted to CNS

Definition
F. Info is not sent to CNS
Term

What is not true about sense of smell?

A. Mechanical similar to taste

B. Less developed

C. Organized into epithelium

D. Nerve impulses are generated to CNS

E. None of the above

Definition
E. None of the above are true
Term

True or False:

The Eustachian tube equalizes pressure on two sides of oval window

Definition
FALSE
Term
_____________ is a paper thin connective tissue structure, tightly stretched over the opening between the external auditory canal & the middle ear cavity
Definition
Tympanic Membrane
Term

What type of joint is between the ossicles of the ear?

 

Definition
Synovial
Term
Describe the function of the Middle Ear:
Definition
To Dampen the noise and filter sound
Term

Describe the function of the inner ear:

 

Definition
To change sound into a nerve impulse
Term
Describe the function of the Outer ear:
Definition
To funnel sound into inner ear
Term
___ is a mechianical sense that helps tha naimal maintain its balance by keeping track of the position and movement of the head
Definition
Equilibrium
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