Answer the following statements true (T) or false (F)
1. Afferent vessels carry lymph toward the lymph node.
2. Lymph typically has several efferent vessels.
3. Efferent vessels carry lymph away from the lymph node.
4. Lymph nodes can trap cancer cells that have been carried away from the primary cancer site.
5. The lymphatic system may be the route that some cancers use to spread to other parts of the body.
1. TRUE
2. FALSE
3. TRUE
4. TRUE
5. TRUE
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The amnion is one of the extraembryonic membranes, and its function is to
A. give the embryo nourishment. B. form the plasma portion of the blood. C. prevent desiccation of the embryo. D. permit implantation to occur. E. allow fluid to enter the placenta.
Acetyl CoA has the ability to ________.
A. directly form pyruvic acid B. directly enter the citric acid cycle C. be transformed back into glucose if unused D. All of the choices are correct.
Discuss the path of nerve impulses from the spiral organ (organ of Corti) to the primary auditory cortex in the brain
What will be an ideal response?
Calcium-induced calcium release occurs when
A. the eflux of Ca2+ from the cell results in depolarization. B. Ca2+ entering through the plasma membrane stimulates release of Ca2+ from the sarcoplasmic reticulum. C. Ca2+ from the sarcoplasmic reticulum stimulates the movement of Ca2+ into the cell through the plasma membrane. D. Ca2+ is released from both the sarcoplasmic reticulum and the cardiac muscle cell.