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- One of the body’s normal physiologic responses to pain is a. hypotension. b. pulse rate below 50/minute. c. diaphoresis. d. hypoglycemia.Which of the following would result in higher force production at lower action potential frequencies W. increase SERCA activity X. increase DHPR sensitivity Y. increase acetylcholineesterase activity Z. increase Ca2+ releaseWhy is salbutamol better than isoproterenol in asthma management in terms of agonistic effect?
- The neurotransmitter acetylcholine is released from presynaptic neurons in response to a nerve impulse and diffuses across the È synaptic cleft, or neuromuscular junction, to a receptor on another neuron or a muscle cell. The nicotinic acetylcholine receptor is a pentamer containing four types of subunits, azßys. Place the events in the correct order, from the release of acetylcholine from a neuron to receptor resensitization: -excited presynaptic neuron releases acetylcholine -acetylcholine diffuses across synaptic cleft or neuromuscular junction -acetylcholine is released from the binding sites -two acetylcholine bind to a receptor; the gate opens -small cations pass through the open pore of the receptor -the plasma membrane of the target cell is depolarized -two acetylcholine are tightly bound to a receptor; the gate is closed -one acetylcholine binds to a receptor; the gate is closed.During strenuous exercise, which of the following changes most infuences total peripheral resistance?A) Decreased blood viscosityB) Decreased sympathetic cholinergic activityC) Increased sympathetic adrenergic activity D) Vasodilation in skeletal muscleWhich of the following oxides is released in trace quantities by some medicines, resulting in muscle contractions? Select one: a. N2O b. CO c. SO3 d. NO e. CO2
- Students in a veterinary school are given the following hypotheticalproblem: A dog ingests organophosphate poison, and the students areresponsible for saving the animal’s life. Organophosphate poisons bindto and inhibit acetylcholinesterase. Several substances the studentscould inject include the following: acetylcholine, curare (which blocksacetylcholine receptors), and potassium chloride. If you were a studentin the class, what would you advise to save the animal?. In a study of healthy volunteers, chewed aspirin has indicated a faster (5 min) effect as opposed to regular swallowed aspirin (12 minutes). Which of the following mechanisms explains the above effect? Chewing allows for aspiring to act faster as a reversible COX-1 inhibitor. Chewing allows for faster dissolution time to reach its peak effect quicker. Chewing allows for aspiring to act faster as a reversible inhibitor for thromboxane A2.dry mouth is typical side effect of a drug use to teeat sea sick, 1. both para and sympathetic antagnist activity 2.para antagnist 3, somatic antagnist 4,sympathetic antagnist
- When ethanol binds to glutamate receptors it operates as a receptor ______________________ and prevents cellular _________________________. A. agonist / depolarization B. antagonist / hyperpolarization C. antagonist / depolarization D. agonist / hyperpolarizationWhich of the following is (are) released when the sympathetic nerve fibers are stimulated?1. Norepinephrine2. Propranolol3. Acetylcholine4. EpinephrineA. 1 onlyB. 2 onlyC. 1 and 4 onlyD. 2, 3, and 4 onlydescribe the mechanism for the anti-pain activity of aspirin. make sure to state its target and the metabolic pathway affected
