Specialization of target-cell receptors explains the specificity of hormonal action
Indicate whether the statement is true or false
T
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The ________ flexes your knee.
A. quadriceps femoris B. biceps brachii C. hamstring group D. gluteus maximus
Match each of the terms with its definition or description.
a. right lymphatic duct b. thoracic duct c. cisterna chyli d. efferent vessels e. afferent vessels f. thymus g. palatine tonsils h. pharyngeal tonsils i. lingual tonsils j. spleen k. lacteals l. lymph nodes m. thymosins 1. _____ Type of lymph vessel that moves lymph toward the lymph node 2. _____ Structure in which T cells mature 3. _____ Structures that can also be called adenoids 4. _____ Structure that drains about one fourth of the lymph of the body 5. _____ Type of lymph vessel that moves lymph away from the lymph node 6. _____ Tonsils that are near the base of the tongue 7. _____ A storage area for lymph in the thoracic duct 8. _____ Tonsils that are on either side of the throat 9. _____ Structure through which about three fourths of the lymph in the body drains 10. _____ Largest organ of the lymphatic system 11. _____ A group of hormones produced by the thymus gland 12. _____ Lymphatic vessels in the wall of the small intestine 13. _____ Structures that filter the lymph before it is returned to the blood
What occurs during hyperpolarization of a neuron membrane?
A. Sodium ions are leaving the cell B. Sodium ions are entering the cells C. Potassium ions are leaving the cell D. Potassium ions are entering the cell E. Both sodium and potassium ions are leaving the cell
Cardiac muscle
A) is only in the heart. B) contracts as a syncytium. C) excites itself. D) all of the above.