Chapter 16: Nervous System- Senses

The ability to respond to a stimulus

A feature common to all receptors is ____.

Optic disc

A lack of photoreceptors in this structure creates the "blind spot"?

2

Each eye has ____ lacrimal puncta.

Buds

Gustatory cells are found in taste ____.

Gustatory

In a taste bud the basal cells replace the ____ cells.

Tracts

Neurons in the olfactory bulb travel through the olfactory ____ to the brain.

A. Lateral geniculate nucleus of the thalamus B. Superior colliculi

Optic tracts extend to which of the following after they leave the optic chiasm?

1. Sclera 2. Choroid 3. Pigmented layer of retina 4. Neural layer of retina

Order these structures from superficial to deep:

1. Lacrimal puncta 2. Lacrimal canaliculus 3. Lacrimal sac 4. Nasolacrimal duct

Order these structures in the order that tears travel through them:

1. Malleus 2. Incus 3. Stapes

Place the auditory ossicles in the order that they occur from lateral to medial:

1. Fibrous tunic 2. Vascular tunic 3. Retina

Place the layers of the eye in order from superficial to deep:

1. Choroid 2. Photoreceptors 3. Horizontal cells 4. Bipolar cells

Place the structures of the eye in order from superficial to deep:

1. Iris 2. Ciliary body 3. Choroid

Place the structures of the vascular tunic in order from anterior to posterior:

1. External ear 2. Middle ear 3. Inner ear

Place the three regions of the ear in order from lateral to medial:

Simple in structure

Receptors for general senses are usually ____.

Interoceptors

Specific types of receptors called ____ detect stimuli in the internal organs.

Basal

Taste buds are made of gustatory cells, supporting cells, and ____ cells.

Elastic

The auricle has ____ cartilage that supports its structure.

Smooth muscle

The ciliary muscles are made of:

Tympanic membrane, eardrum

The external acoustic meatus terminates at the ____ ____ most commonly called the ____.

Palpebrae

The eyelids are also called ____.

Ciliary body

The iris is continuous with the:

Conjuctival fornix

The junction of the palpebral and ocular conjunctiva is called the :

Lysozyme

The lacrimal fluid prevents bacterial infection because it contains an anitbacterial enzyme called ____.

Orbital, palpebral

The lacrimal gland has a superior or ____ part and an inferior or ____ part.

Flattened

The lens is ____ when we are viewing faraway objects.

Cornea

The limbus system is the junction between the sclera and:

Lens

The suspensory ligaments connect the ____ to the ciliary muscles.

Air

The tympanic cavity if filled with:

Humor

The vitreous body is also called the vitreous ____.

Visceral

There are two types of nociceptors, somatic nocicrecptors and ____ nociceptors.

False

True or false: The eye is spherical measuring about 5 centimeters in diameter and most of it is receded into the orbit of the skull.

True

True or false: The primary purpose of the eyebrows is to keep sweat out of the eyes.

Thousands

We have the ability to distinguish one odor among ____ of different ones.

Olfaction

We use the sense of ____ to sample our environment for information about the food we eat, the presence of other individuals in the room, or potential danger.

Anterior chamber

What chamber is between the iris and cornea?

A. Amplifying sound waves B. Transmit sound waves to inner ear

What is the function of auditory ossicles?

Tactile receptor

What is the most numerous type of receptor?

Choroid

What structure is filled with pigment from melanocytes?

Sclera

What structure is the "white" of the eye?

Exteroceptors

What type of receptor is found in the mucous membranes?

Contracts, dilates

When light hits the eye, the pupil ____ in bright light or ____ in dim light.

A. Ear B. Skin

Where are mechanoreceptors found?

Inner ear

Where is the cochlea located?

A. Sweet B. Sour C. Bitter D. Salt E. Umami

Which are basic taste sensations?

A. It is vascular B. It contains goblet cells C. It does not cover the cornea

Which are true of the conjunctiva?

A. Sclera B. Cornea

Which of the following are a part of the fibrous tunic?

A. Filiform B. Fungiform C. Foliate D. Vallate

Which of the following are types of papillae?

Skin, oral cavity

Which of the following structures contain exteroceptors?

A. Touching a hot pan B. Sprained ankle C. Exposure to acid on the skin

Which of the following would stimulate somatic nociceptors?

Chemoreceptors, thermoreceptors, photoreceptors, mechanoreceptors, nociceptors

Which terms indicate a receptor type that is classified by its modality of stimulus?

Chemoreceptors

____ are receptors that detect chemicals.