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BIO201 PVCC Lecture Exam #2 Latest Questions With Passed Solutions!
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What layers make up the epidermis? - ️️stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum Approcrine sweat glands - ️️found in armpits, nipples, and groins secrets products in response to hormones or nerves stratum basale - ️️the deepest layer of ...

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  • November 12, 2024
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  • 2024/2025
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BIO201 PVCC Lecture Exam #2
What layers make up the epidermis? - ✔️✔️stratum basale, stratum spinosum, stratum
granulosum, stratum lucidum, stratum corneum

Approcrine sweat glands - ✔️✔️found in armpits, nipples, and groins
secrets products in response to hormones or nerves


stratum basale - ✔️✔️the deepest layer of the epidermis consisting of stem cells
capable of undergoing cell division to form new cells

What are the 3 layers of the skin? - ✔️✔️epidermis, dermis, hypodermis

What are the 4 cells of the epidermis? - ✔️✔️keratinocytes, melanocytes, langerhans
cells, merkel cells

function of keratinocytes - ✔️✔️produce keratin

function of melanocytes - ✔️✔️produce melanin

function of langerhans cells - ✔️✔️activate the immune system

function of merkel cells - ✔️✔️detect touch sensations


stratum spinosum - ✔️✔️a layer of the epidermis that provides strength and flexibility to
the skin

stratum granulosum - ✔️✔️slows water loss across the epidermis and helps from
keratin in the upper layers

stratum lucidum - ✔️✔️a clear layer of the epidermis found only in the thick skin of the
fingers, palms, and soles

stratum corneum - ✔️✔️outermost layer of the epidermis, which consists of flattened,
keratinized cells

What 3 factors contribute to skin color? - ✔️✔️melanin, carotene, hemoglobin

Skin appendages include - ✔️✔️Hair, nails, sweat and oil glands

, Skin appendages like hair and hair follicles, nails, sweat glands, and sebaceous glands
each plays a unique role in what? - ✔️✔️homeostasis

eccrine sweat glands - ✔️✔️found in palms, soles of the feet, and forehead; respond to
elevated body temperature

6 functions of the skin - ✔️✔️1. Protection 2. Absorption 3. Secretion 4. Excretion 5.
Regulation 6. Sensation

3 types of skin cancer - ✔️✔️MILD - basal cell carcinoma
MODERATE - squamous cell carcinoma
SEVERE - melanoma

immediate threat of burns - ✔️✔️dehydration and electrolyte imbalance

Secondary threat of burns - ✔️✔️infection

1st degree burn - ✔️✔️Only the epidermis (red, painful, and edema)

2nd degree burn - ✔️✔️epidermis and part of dermis (blistered)

3rd degree burn - ✔️✔️Full thickness damage through skin into nerves and muscles

rule of nines - ✔️✔️a method used in calculating body surface area affected by burns

Fetal germ layers - ✔️✔️Ectoderm - skin, nervous system
Mesoderm - Muscles, skeleton
Endoderm - digestive, respiratory lining, endocrine glands

3 types of cartilage - ✔️✔️hyaline, elastic, fibrocartilage

Where do you find hyaline cartilage? - ✔️✔️ends of long bones (ribs,nose)

Where do you find elastic cartilage? - ✔️✔️ear, epiglottis

Where do you find fibrocartilage? - ✔️✔️intervertebral discs, knee, pubic symphysis

7 functions of bones - ✔️✔️1) Support
2) Protection
3) Movement
4) Mineral and growth factor storage
5) Hematopoiesis (blood cell formation)
6) Triglyceride storage
7) Hormone production

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