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TAMU BIOL 319 Cohn Exam 1 Questions and Answers, Exams of Advanced Education

American Public University System (APUS)Advanced Education

TAMU BIOL 319 Cohn Exam 1 Questions and Answers

Typology: Exams

2024/2025

Available from 06/29/2025

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TAMU BIOL 319 Cohn Exam 1 Questions
and Answers
investigates the body's structures and the relationship between structure and function -
ANS-Anatomy
structures can be examined without a microscope - ANS-Gross Anatomy
looks at surface/exterior to visualize structures deeper inside - ANS-Surface Anatomy
scientific study of function of body - ANS-Physiology
organismal, system, organ, cellular - ANS-What are the different ways physiology can
be studied?
chemical, cell, tissue, organ, organ system, organism - ANS-What levels of physiology
are there?
sweat glands, skin, nails, hair - ANS-What are the main parts of the integumentary
system?
1. protection
2. sensation
3. temperature regulation
4. vitamin d production
5. excretion - ANS-What are the major functions of the integumentary system?
1. epidermis
2. dermis - ANS-What are the 2 layers of the skin?
-superficial layer of skin, consisting of stratified squamous tissue
-contains no blood vessels
-living cells receive nutrients and excrete waste products through diffusion - ANS-
Epidermis
basement membrane - ANS-What separates the epidermis and the dermis?
produce keratin that makes cells more durable and give the epidermis its ability to resist
abrasion and reduce water loss - ANS-Keratinocytes
produce the pigment melanin, which contributes to skin color - ANS-melanocytes
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TAMU BIOL 319 Cohn Exam 1 Questions

and Answers

investigates the body's structures and the relationship between structure and function - ANS-Anatomy structures can be examined without a microscope - ANS-Gross Anatomy looks at surface/exterior to visualize structures deeper inside - ANS-Surface Anatomy scientific study of function of body - ANS-Physiology organismal, system, organ, cellular - ANS-What are the different ways physiology can be studied? chemical, cell, tissue, organ, organ system, organism - ANS-What levels of physiology are there? sweat glands, skin, nails, hair - ANS-What are the main parts of the integumentary system?

  1. protection
  2. sensation
  3. temperature regulation
  4. vitamin d production
  5. excretion - ANS-What are the major functions of the integumentary system?
  6. epidermis
  7. dermis - ANS-What are the 2 layers of the skin? -superficial layer of skin, consisting of stratified squamous tissue -contains no blood vessels -living cells receive nutrients and excrete waste products through diffusion - ANS- Epidermis basement membrane - ANS-What separates the epidermis and the dermis? produce keratin that makes cells more durable and give the epidermis its ability to resist abrasion and reduce water loss - ANS-Keratinocytes produce the pigment melanin, which contributes to skin color - ANS-melanocytes

part of the immune system - ANS-langerhans cells specialized epidermal cells associated with the nerve endings responsible for detecting light touch and superficial pressure - ANS-merkel cells Keratinocyte 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 - ANS-How are new keratinocytes produced? the cells eventually die and produce an outer layer of dead, hard cells that resists abrasion and forms a permeability barrier - ANS-keratinization

  1. stratum basale
  2. stratum spinosum
  3. stratum granulosum
  4. stratum lucidum
  5. stratum corneum - ANS-strata of the epidermis -deepest portion of the epidermis is a single layer of cuboidal or columnar cells -epidermis anchored to the basement membrane by hemidesmosomes -desmosomes hold keratinocytes together -connections between hemidesmosomes and desmosomes provide structural strength -keratinocyte stem cells undergo mitosis every 19 days - ANS-1. stratum basale -consist of 8-10 layers of many sided cells - ANS-2. Stratum Spinosum -consist of 2-5 layers of somewhat falttended diamond shaped cells -long axes of these cells are oriented parallel to the surface of the skin - ANS-3. Stratum Granulosum -thin clear zone above the stratum granulosum -several layers of dead cells with indistinct boundaries -present only in a few areas of the body - ANS-4. Stratum Lucidum -most superficial -25+ layers of dead, overlapping squamous cells joined by desmosomes - ANS-5. Stratum Corneum -has all five epithelial strata, and the stratum corneum has many layers of cells -found in areas subject to pressure or friction, such as the palms of the hands, the soles of the feet, and the fingertips - ANS-Thick Skin -covers the rest of the body and is more flexible than thick skin -the stratum granulosum consists of only one or two layers of cells -stratum lucidum is generally absent