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

Match stimuli with sensory receptor:

__ Mechanical             A. Taste and smell

           __Thermal                B. Touch, hearing, & balance

__Electomagnetic             C. Hot and Cold

__Chemical                             D. Vision

Mechanical = Touch, hearing, and balance

 Thermal = Hot and Cold

Electromagnetic = Vision                        

Chemical = Taste and smell

List four of the five general senses

• Visceral        
• Pain             
• Temperature  
• Proprioception

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

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

A. Under the tongue

B. Pharynx

C. Roof of mouth

D. Inside cheek

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

The receptor organ of hearing is :

A. Cochlea

B. Organ of corti

C. Tympanic membrane

D. Basilar membrane

The osicles are located here:

A. inner ear

B. Outer ear

C.Pinna        

D. Middle Ear

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

A. Synovial

B. Fibrous

C. Suture

D. Cartilaginous

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

A. Cornea

B. Retina

C. Tapetum Lucidum

D. Choroid

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

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

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.

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

A. Vitreous body

B. Aqueous body

C. Cornea          

D. Lens

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

B.

A & D

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

A. 3rd eyelid

Also known as nictitating membrane

The inner mucous layer of tears is produced by:

A. meibomian glands

B. Tarsal glands       

C. 3rd Eyelid            

D. Conjunctival Cells

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

A = 2.

B = 1.

C = 3.

D = 4.

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

E = 2

F= 4

G = 3

H =1

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

I = 4

J = 3

K = 2

L = 1

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

M = 4

N = 1

O = 2

P = 3

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

Q = 4

R = 3

S = 2

T = 1

True or False:

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

True or False:

Pain receptors are found thorughout the body uncluding the brain

False:

There are no Pain receptors in the brain

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

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

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

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

True or False:

The Eustachian tube equalizes pressure on two sides of oval window

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

Describe the function of the inner ear: