lecture 3

Question 1

in what part of a cell would you find most of a cell’s genetic material

Answer 1

nucleus

Question 2

what’re the three main parts of a human body cell

Answer 2

plasma membrane, cytoplasm, nucleus

Question 3

a group of cell’s that have a common function together to perform a specialized group of activities is called?

Answer 3

tissue

Question 4

what tissue has an extensive matrix, usually has many blood vessels, and provides oxygen and nutrients to overlying tissues

Answer 4

connective tissue

Question 5

what is the skin also called?

Answer 5

cutaneous membrane

Question 6

what type of epithelium makes up the epidermis?

Answer 6

keratinized stratified squamous

Question 7

90% of the cells of the epidermis are of which type?

Answer 7

keratinocytes

Question 8

which layer consists on average of 25-30 of flattened dead keratinocytes

Answer 8

stratum corneum

Question 9

pigment-producing cells of the epidermis are located in which layer?

Answer 9

stratum basale

Question 10

what pigment-producing cell is necessary for the production of vitamin D by the skin

Answer 10

melanocytes

Question 11

what layer of stem cells that undergo cell division to continually produce new keratinocytes

Answer 11

stratum basale

Question 12

which epidermal layer marks the transition between metabolically active cells of lower layers and the dead layers of keratinocytes of the upper layers

Answer 12

stratum gransulosum

Question 13

what skin layer is only present in thick skin

Answer 13

stratum lucidem

Question 14

what function do langerhan’s cells have and in what skin layer are they present

Answer 14

they’re immune cells that activate other immune cells when the skin is invaded by microbes, in the stratum spinosum

Question 15

the alternative name for the stratum basale suggests it’s role in forming new cells

Answer 15

germinativum

Question 16

what can be caused due to a decrease in the amount of oxygen in the blood

Answer 16

cyanosis

Question 17

as newly formed cells of the stratum basale are pushed to the surface, they accumulate keratin and undergo apoptosis. this process is called?

Answer 17

keratinization

Question 18

what is the subcutaneous layer also called?

Answer 18

hypodermis

Question 19

tactile epithelial cells are located in the

Answer 19

stratum basale

Question 20

what structure found in the skin plays an important role in thermoregulation

Answer 20

sweat glands

Question 21

the buildup of bilirubin in a infant’s blood can occur if the liver does not remove the chemical, this is called

Answer 21

jaundice

Question 22

how do nutrients reach the epidermis

Answer 22

diffusing through the tissue fluid from blood vessels in the dermis

Question 23

vitamin C is important collagen sythesis. which area of the skin would be most affected if there is a deficiency in vitamin C

Answer 23

reticular region of the dermis

Question 24

in the elderly, blood supply to the dermis is reduced and sweat glands are less active. this combination of factors would most affect…

Answer 24

the ability to thermoregulate