Exam 2 Essay: BIOS251 / BIOS 251 (Latest Update 2024 / 2025) Anatomy & Physiology I with Lab | Review Questions with Verified Answers| 100% Correct | Grade A - Chamberlain
Question:
Five Functions of the Plasma Membrane
Answer:
1. Defines the boundaries of the cell; separation of ICF and ...
Exam 2 Essay: BIOS251 / BIOS 251
(Latest Update ) Anatomy
& Physiology I with Lab | Review
Questions with Verified Answers|
100% Correct | Grade A -
Chamberlain
Question:
Five Functions of the Plasma Membrane
Answer:
1. Defines the boundaries of the cell; separation of ICF and ECF
2. Provides structural support for the cell
3. Protects the cell
4. Regulates the transport of substances into and out of the cell
5. Monitor and detect changes in the ECF
, Question:
What are the four types of membranes found in the human body (give an
example/location of each)?
Answer:
1) Cutaneous membranes: Also known as skin, this epithelial membrane
comprises a top layer of epithelium and rests on top of connective tissue.
2) Serous membranes: Line internal body cavities that don't open to the
outside environment, such as the pleura, pericardium, and peritoneum. Their
main function is to reduce friction between organs. For example, the pleura
surrounds the lungs in the pleural cavity, the pericardium surrounds the heart
and blood vessels in the pericardial cavity, and the peritoneum surrounds the
abdominal cavity.
3) Mucous membranes: Line passageways and chambers open to the outside
environment, such as the respiratory, digestive, reproductive, and excretory
tracts. Mucous cells produce mucus to keep passageways moist and
lubricated, which reduces friction and helps with epithelial absorption. For
example, mucus traps dirt and debris particles in the nasal cavity to keep the
air pathways clean.
4) Synovial membranes: Found in joints, tendon sheaths, and bursae,
producing synovial fluid for lubrication.
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