1. Which of the following describes an endocytosis? There may be more than one answer.
Select one or more:
a. A cell engulfs a bacterium by pushing its cell membrane around the bacterium forming a phagosome that will pinched off from the cell membrane and enter the cytoplasm.
b. Specific solutes accumulate along an indented cell membrane that will form into an endosome and it will pinch off from the cell membrane and enter the cytoplasm.
c. A process that transports molecules outside the cell via fusion of a vesicle with the plasma membrane.
d. A pinocytosis is an uptake of a non-selective materials, like the extracellular fluid, into a cell via endosome that pinches off from the plasma membrane into the intracellular fluid.
e. The process is initiated when an influx of Ca2+ interacts with rabs and snares in the intracellular fluid.
2.
What are the characteristics of the red blood cells (RBCs)? There may be more than one answer.
Select one or more:
a. RBCs are circular, flattened, and biconcave cells which transport oxygen from the tissues to the lungs and carbon dioxide from the lungs to the tissues.
b. RBCs lacked nucleus and organelles but contained glycolytic enzymes, carbonic anhydrase, and hemoglobin.
c. RBCs, leukocytes, and platelets are derived from uncommitted pluripotent hematopoietic stem cells.
d. Erythropoiesis in adult occurs in the liver, spleen, and all red bone marrow.
e. RBCs live for about 9 days.
In: Anatomy and Physiology
In: Anatomy and Physiology
estion 14
Which of the following factors would decrease (slow down) diffusion rates?
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greater membrane surface area |
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higher temperature |
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higher molecular weight |
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steep gradient |
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None of the above |
In: Anatomy and Physiology
Please explain sitting on a chair and standing up on how biomechanically the following phases work
Standing-
Squating down -
Sitting down-
Standing up-
How does sitting on a chair and standing up work Mechanical and Anatomical? ( use anatomy)
In: Anatomy and Physiology
Describe red blood cell count, percentage of reticulocytes, hemoglobin, hematocrit, mean corpuscular volume, and mean corpuscular hemoglobin concentration as it relates to the diagnosis of anemia.
In: Anatomy and Physiology
Summarize the different types of hematomas that can occur in the brain.
In: Anatomy and Physiology
In: Anatomy and Physiology
How is the stomach secretion being regulated?
In: Anatomy and Physiology
In: Anatomy and Physiology
2. Where along the cell does a presynaptic input (synapse) have the greatest effect on determining whether a postsynaptic neuron fires an action potential or not?
3.At the resting potential, which ion is a cell most permeable to? Why is the cell most permeable to that ion?
4. Explain why an action potential normally does not flow backwards, toward the cell body. Would it be different if you injected Na+ into the middle of the axon? Why?
In: Anatomy and Physiology
Disease Terms Puzzle
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Across
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Down
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In: Anatomy and Physiology
Matching
Match the endocrine term in column I with the correct description in column II.
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Column II |
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In: Anatomy and Physiology
Matching
Match the term in Column I with the definition in Column II.
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Column I |
Column II |
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In: Anatomy and Physiology
Make a schematic diagram for the phases of swallowing.
In: Anatomy and Physiology
Digestive Organs Puzzle
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Across |
Down |
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In: Anatomy and Physiology