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BIOS 255 Comprehensive Exam 3 ( Latest 2024 / 2025 ) Actual Questions and Answers 100% Correct
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BIOS 255 Comprehensive Exam 3 ( Latest 2024 / 2025 ) Actual Questions and Answers 100% Correct
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BIOS 255 Comprehensive Exam 3By ExamNavigator
, BIOS 255 Comprehensive Exam 3
1. Define positive feedback
Answer: A self-amplifying cycle that leads to greater changein the same direction
2. Define negative feedback
Answer: A process in which the body senses a change andactivates mechanisms that negate or
reverse it
3. What is epithelial tissue?
Answer: a sheet of cells that covers a body surface or lines abody cavity
4. Is epithelial tissue vascular or avascular?
Answer: avascular (it contains no bloodvessels)
5. why is epithelial tissue polar?
Answer: These cells are polarized and form extensive cell-cell adhesions, including adherens
junctions and tight junctions, with each other
6. epithelial tissue role in regeneration
Answer: capable of rapidly replacing damaged anddead cells.
7. types of protein fibers in connective tissue
Answer: collagen fibers, reticular fibers,elastic fibers
8. what is chondroitin sulfate and where is it located?
Answer: provides support andadhesiveness in cartilage, bone, skin, and blood vessels
*most commonly found in cartilage*
9. what is the function of keratin?
Answer: Prevents underlying structures from drying out
10. What is a merocrine gland?
Answer: glands that release fluids by exocytosis
11. what are the functions of merocrine glands
Answer: thermoregulation, secretion,protection
12. What is a sebaceous gland?
Answer: a small gland in the skin which secretes alubricating oily matter (sebum)
13. function of sebaceous glands
Answer: produce sebum (oil) into the hair follicles tolubricate the skin and hair.
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