NEW TAMU BIOL 319 COHN EXAM 1 QUESTIONS WITH
COMPLETE SOLUTIONS.
Keratinocytes - keratin that makes cells more
durable and give the epidermis its ability to resist abrasion and
reduce water loss melanocytes - s/s/,/ANSWERproduce the
pigment melanin, which contributes to skin color
What levels of physiology are there' . -
v/v'v'ANSWERchemica1, cell, tissue, organ, organ system,
organism
What are the main parts of the integumentary system' . -
v'v'v'ANSWERsweat glands, skin, nails, hair
Gross Anatomy - v/v/v'ANSWERstructures can be examined
without a microscope
What are the major functions of the integumentary system? -
v'v'v'ANSWER1.
protection
2. sensation
3. temperature regulation
, 4. vitamin d production
5. excretion
What are the 2 layers of the skin? - ./v'v'ANSWER1. epidermis
2. dermis
Epidermis - S/S/v'ANSWER-superficial layer of skin, consisting
of stratified squamous tissue
-contains no blood vessels
-living cells receive nutrients and excrete waste products
through diffusion
langerhans cells - of the immune system
merkel cells - Vs/VANSWERspeciaIized epidermal cells
associated with the nerve endings responsible for detecting
light touch and superficial pressure
How are new keratinocytes produced? - ../v/v'ANSWERKeratinocyte
stem cells undergo mitosis in the deepest layer of the epidermis. As
new cells form, they push older cells to the surface where they slough
off
COMPLETE SOLUTIONS.
Keratinocytes - keratin that makes cells more
durable and give the epidermis its ability to resist abrasion and
reduce water loss melanocytes - s/s/,/ANSWERproduce the
pigment melanin, which contributes to skin color
What levels of physiology are there' . -
v/v'v'ANSWERchemica1, cell, tissue, organ, organ system,
organism
What are the main parts of the integumentary system' . -
v'v'v'ANSWERsweat glands, skin, nails, hair
Gross Anatomy - v/v/v'ANSWERstructures can be examined
without a microscope
What are the major functions of the integumentary system? -
v'v'v'ANSWER1.
protection
2. sensation
3. temperature regulation
, 4. vitamin d production
5. excretion
What are the 2 layers of the skin? - ./v'v'ANSWER1. epidermis
2. dermis
Epidermis - S/S/v'ANSWER-superficial layer of skin, consisting
of stratified squamous tissue
-contains no blood vessels
-living cells receive nutrients and excrete waste products
through diffusion
langerhans cells - of the immune system
merkel cells - Vs/VANSWERspeciaIized epidermal cells
associated with the nerve endings responsible for detecting
light touch and superficial pressure
How are new keratinocytes produced? - ../v/v'ANSWERKeratinocyte
stem cells undergo mitosis in the deepest layer of the epidermis. As
new cells form, they push older cells to the surface where they slough
off
