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Biol 2220 Exam 2 UPDATED Exam Questions and CORRECT Answers

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  • Biol 2220

Biol 2220 Exam 2 UPDATED Exam Questions and CORRECT Answers 2 types of epithelial tissue - CORRECT ANSWER - covering and lining, glandular what does covering and lining epithelium do/cover? - CORRECT ANSWER - limiting boundary of free body surfaces; all skin and cavities open to the environm...

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  • January 4, 2025
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Biol 2220
  • Biol 2220
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Biol 2220 Exam 2 UPDATED Exam
Questions and CORRECT Answers
2 types of epithelial tissue - CORRECT ANSWER - covering and lining, glandular



what does covering and lining epithelium do/cover? - CORRECT ANSWER - limiting
boundary of free body surfaces; all skin and cavities open to the environment (we are like a
straw)


basal layer of covering and lining epithelium - CORRECT ANSWER - deep, attaches to
dense irregular connective tissue by a basement membrane


basement membrane components - CORRECT ANSWER - reticular lamina and basal
lamina


basal lamina - CORRECT ANSWER - superficial layer of basement membrane; non
cellular filter made up of glycoproteins


reticular lamina - CORRECT ANSWER - deep layer of basement membrane; collagen



Does epithelial tissue have blood supply? - CORRECT ANSWER - no it is avascular and
dependent on the dermis (dense irregular CT) for nutrients


What is glandular epithelium? - CORRECT ANSWER - epithelial cells that produce and
secrete substances into ducts or body fluids


What is the foundation for glandular secretions? - CORRECT ANSWER - water based
(very occasionally lipid)

,What do glands need to function? - CORRECT ANSWER - ATP for active transport out of
the cell


exocrine gland - CORRECT ANSWER - gland that releases its secretions through ducts



endocrine gland - CORRECT ANSWER - gland that releases its secretion onto a surface



where do all secretions inevitably end up - CORRECT ANSWER - bloodstream



unicellular exocrine gland - CORRECT ANSWER - goblet cell, found in PCCE, secrete
mucin


merocrine exocrine gland method of secretion - CORRECT ANSWER - vesicular
transport/exocytosis


holocrine gland method of secretion - CORRECT ANSWER - product is stored in cells,
cells disintegrate, cell has to be replaced


merocrine gland example - CORRECT ANSWER - sweat, saliva



holocrine gland example - CORRECT ANSWER - sebaceous gland



cardiac muscle characteristics (4) - CORRECT ANSWER - intercalated discs, striations,
involuntary, uninucleate


smooth muscle characteristics (2) - CORRECT ANSWER - no striation, involuntary



skeletal muscle characteristics (3) - CORRECT ANSWER - striations, voluntary,
multinucleate

, Components of connective tissue - CORRECT ANSWER - ground substance, fibers, and
cells


ground substance of connective tissue - CORRECT ANSWER - often interstitial fluid



fibers of connective tissue and their functions (3) - CORRECT ANSWER - collagen
(strength), elastic (stretch), reticular (mesh webbing)


4 types of connective tissue - CORRECT ANSWER - connective tissue proper, cartilage,
bone tissue, blood


5 types of connective tissue proper - CORRECT ANSWER - 1. areolar connective tissue
2. Dense irregular connective tissue
3. Dense regular connective tissue
4. Adipose tissue
5. Reticular tissue


3 types of cartilage - CORRECT ANSWER - hyaline, elastic, fibrocartilage



steps of gastrula development - CORRECT ANSWER - zygote cleaves into 8 cells, which
cleave again to form a blastula (hollow ball of cells), which undergoes gastrulation (infolding) to
form a gastrula


ectoderm turns into - CORRECT ANSWER - epithelial and nervous tissue



mesoderm turns into - CORRECT ANSWER - epithelial, connective, and muscular



endoderm turns into - CORRECT ANSWER - epithelium

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