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BIOS 255 EXAM 1 2024/2025 Questions and Answers (Verified Answers) $11.99   Add to cart

Exam (elaborations)

BIOS 255 EXAM 1 2024/2025 Questions and Answers (Verified Answers)

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BIOS 255 EXAM 1 2024/2025 Questions and Answers (Verified Answers)BIOS 255 EXAM 1 2024/2025 Questions and Answers (Verified Answers)BIOS 255 EXAM 1 2024/2025 Questions and Answers (Verified Answers)BIOS 255 EXAM 1 2024/2025 Questions and Answers (Verified Answers)BIOS 255 EXAM 1 2024/2025 Questions...

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  • March 29, 2024
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  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
  • BIOS 255
  • BIOS 255
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DoctorKen
BIOS 255 EXAM 1 2024/2025 Questions and
Answers (Verified Answers)


1. What are the two main cavities covered in lecture?

Dorsal and ventral

2. What is the function of the dorsal cavity and what two subdivisions does it

contain?

Protection of the nervous system; cranial cavity and vertebral cavity

3. What is the function of the ventral cavity and what two subdivisions does it

contain?

Encloses internal organs; Thoracic (above diaphragm) and abdominopelvic

4. What does the thoracic cavity contain?

Pleural cavity, mediastinum (surrounds remaining organs), and pericardial cavity

5. What does the abdominopelvic cavity contain?

Abdominal cavity (stomach, intestines, spleen, liver) and pelvic cavity (bladder,

reproductive organs, rectum)

6. What kind of serous membrane lines the cavity wall?

Parietal (remember serous membranes are continuous)

7. What kind of serous membrane lines the organ it's associated with?

Visceral (remember serous membranes are continuous)

8. What is meant by the term "anatomical variability"?

It means that humans vary slightly in their anatomy. Only about 90% of all anatomical

structures match the textbook

, 9. What are the functions of the plasma membrane?

Physical boundary, separates intracellular fluids from extracellular fluids, transports

molecules, enzymatic activity, signal transduction using receptors, intercellular

adhesion, cell-cell recognition

10. What is the structure of the plasma membrane?

It is a phospholipid bilayer that has embedded proteins

11. What is the difference between peripheral proteins and integral proteins in

the plasma membrane?

Peripheral - one side

Integral - both sides

12. What is the Glycocalyx and what is its function?

Area around the cell composed of carbohydrates; provides highly specific biological

markers for cell-cell recognition

13. What are the four intracellular junctions?

Tight, adhering, gap and desmosomes

14. What are tight junctions?

(stitches) Impermeable junction that encircles apical surface, inhibits movement

between cells

15. What are adhering junctions?

(snaps) Junctions that provide apical support, deep to tight junction, resists separation

of cells, composed of lots of desmosomes

16. What are desmosomes?

Anchoring junction scattered along the side of cells, joins cytoskeleton of cells together

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