Discuss the role of "blood thinners"
What will be an ideal response?
Anticoagulant drugs ("blood thinners") are sometimes given to prevent thromboembolism in people with conditions that make them more prone to developing clots. For example, heparin accelerates the action of a normal blood-borne inhibitor of thrombin, halting this clot promoter. Warfarin (Coumadin) interferes with vitamin K's action. Vitamin K, commonly known as the blood-clotting vitamin, is essential for normal clot formation. In recent years several new classes of oral anticoagulants have become available. Dabigatran (Pradaxa) is a direct thrombin inhibitor, thereby preventing conversion of fibrinogen to fibrin. Rivaroxaban (Xarelto) and related drugs inhibit active factor X, thus blocking conversion of prothrombin to thrombin. Clopidogrel (Plavix) works by inhibiting the platelet plasmamembrane receptor for ADP.
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During filtration in the nephron, substances move ________
A) from the afferent arteriole into the glomerulus B) from the nephron into the peritubular capillary C) from the peritubular capillary into the nephron D) from the glomerulus into the nephron
Match each of the terms with its correct definition or description.
a. dendrite b. axon c. astrocyte d. microglia e. Schwann cell f. interneuron g. synaptic knob h. serotonin i. synaptic cleft j. enkephalins k. oligodendrocyte l. afferent neuron m. saltatory conduction n. efferent neurons o. cell body p. neurotransmitter q. nodes of Ranvier 1. _____ Part of the axon that releases neurotransmitters 2. _____ Highly branched part of the neuron that carries impulses toward the cell body 3. _____ Microbe eaters in the brain 4. _____ Connects sensory and motor neurons in a reflex arc 5. _____ Small space between the end of one axon and the next neuron 6. _____ Neurotransmitter that is a catecholamine 7. _____ Part of the neuron that conducts impulses away from the cell body 8. _____ Cells that produce myelin for cells in the peripheral nervous system 9. _____ Cells that function in the blood brain barrier 10. _____ Neurotransmitter that functions as a natural pain killer 11. _____ Main part of the neuron 12. _____ Type of nerve impulse that jumps from one node of Ranvier to the next 13. _____ Type of neuron that carries nerve impulses away from the central nervous system 14. _____ Glia cell that produces myelin for the central nervous system 15. _____ Type of neuron that carries nerve impulses toward the central nervous system 16. _____ Carries a nerve impulse across a synapse 17. _____ Indentations in between Schwann cells
Although not seen on an ECG, the period of isovolumetric contraction would occur nearest which deflection of an ECG?
What will be an ideal response?
Which type of tissue would you expect to find in an area where the rapid diffusion of substances is required?
A. Stratified columnar epithelial tissue B. Pseudostratified columnar epithelial tissue C. Simple squamous epithelium D. Stratified squamous epithelial tissue E. Stratified cuboidal epithelium