Quiz 7

Question 1

Describe the structure and function of the external ear

Answer 1

• Contains the pinna, ear canal and tympanic membrane
• Collects sound waves and channels them into the ear canal where the sound gets amplified

Question 2

Describe the structure and function of the middle ear

Answer 2

• Contains the malleus, incus and stapes
• Collects the sound waves from external environment and transfers them into inner ear for auditory transduction

Question 3

Describe the structure and function of the inner ear

Answer 3

• Contains the cochlea, semi-circular canals and vestibules
• Transfers auditory vibrations into electrical impulses to travel along the eighth cranial nerve to the brain

Question 4

Describe the physiology of static balance

Answer 4

When the head is in proper position the cupola stays upright

Question 5

Describe the physiology of dynamic balance

Answer 5

As the head moves the cupola bends in the opposite direction of the rotation

Question 6

What are the organs and accessory organs of the integumentary system

Answer 6

The skin

Question 7

For the two layers of the dermis what are their proper name and the tissue type it is composed of

Answer 7

• Papillary layer is made of loose connective tissue
• Reticular layer is made of dense irregular connective tissue

Question 8

What are the five layers of the skin and their function

Answer 8

• Stratum corneum: prevents unwanted materials from entering
• Stratum lucidum: reduce friction between two layers
• Stratum granulosum: prevents fluid loss
• Stratum spinosum: makes skin flexible and strong
• Stratum basale: replenishes the cells

Question 9

What are the two main chemicals in the epidermis and how they provide protection

Answer 9

• Keratinocytes produces keratin which keeps the skin waterproof
• Menanocytes produces melanin which produces skin color and uv protection

Question 10

What are the main function of eyelashes

Answer 10

Protection of the eye balls from unwanted particles

Question 11

What are the main functions of the nostril hairs

Answer 11

Protection of the nasal canal from unwanted particles

Question 12

What are the main functions of body hair

Answer 12

Protection, sensory input from hair follicles and communication

Question 13

What are the main function of nails and how does their structure help

Answer 13

Provides support as fingers and toes are the farthest extremities and experiences max mechanical stress, composed of tightly packed keratin

Question 14

What is the location and function of the eccrine sudoiferous gland

Answer 14

Squiggly guy that hangs around
- Sweat gland that regulates body temp throughout body

Question 15

What is the location and function of the apocrine sudoriferous gland

Question 16

What is the location and function of the sebaceous gland

Answer 16

Attached to hair roots
- oil gland that lubricates and waterproofs the skin

Question 17

How does the skin provide protection

Answer 17

• Mechanical protection through keratin
• Prevents dehydration through lipid secretions
• UV light protection through melanin

Question 18

How does the skin regulate body temperature

Answer 18

Sweat glands produce sweat (dissolved electrolytes, lactic acid, urea) to reduce heat

Question 19

How does the skin provide sensation

Answer 19

• Mechanoreceptors (touch)
• Thermoreceptors (temp)
• Nocioreceptors (pain)

Question 20

How does the skin synthesize vitamin D

Answer 20

Converts the run rays to a form of vitamin D, needed to absorb calcium

Question 21

How does the skin excrete

Answer 21

Mainly by sweating to remove waste products (salt, CO2, ammonia)