You are looking at a slide during laboratory using a microscope. How can you tell the difference between cilia and microvilli?
What will be an ideal response?
Cilia are much larger than microvilli. Individual cilia are visible with a light microscope. By contrast, microvilli appear only as a thickened border along a cell's surface and can only be viewed clearly with a more powerful type of microscope.
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Breastfeeding prolongs the duration of time it takes for the uterus to shrink to its pre-pregnancy size.
Answer the following statement true (T) or false (F)
Match the hormone with its appropriate function.A. Stimulates synthesis of thyroid hormonesB. Increases adrenal cortex secretionsC. Development of immune systemD. Milk productionE. Decreases blood Ca2+ levelsCalcitonin
Fill in the blank(s) with the appropriate word(s).
Graded muscle contractions ________
A) depend on activation of more and more motor units B) represent increasing amounts of force generated by a muscle C) depend on increasing frequency of nerve action potentials to each motor unit D) all of the above
The skull consists of ________ cranial bones and ________ facial bones.
A. 8; 14 B. 10; 12 C. 7; 12 D. 5; 7 E. 9; 11