Na activation gate open na inactivation 0 gate open k

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Unformatted text preview: ue A. close to the effector, parasympathetic division 0% Feedback Student Response B. close to the effector, sympathetic division C. in a lateral chain or plexus, parasympathetic division D. in a lateral chain or plexus, sympathetic division Score: Value Feedback 0% 0% 100% 0.5/0.5 15. Chemically gated Na<sup>+</sup> channels open. What event causes depolarization of the sarcolemma at the neuromuscular junction? Student Response A. Calcium ions enter the axon B. Calcium ions enter the sarcoplasm from the sarcoplasmic reticulum. C. Acetylcholine is released into the synaptic cleft by exocytosis. D. Acetylcholine binds to post-synaptic receptors on the sarcolemma. E. Na+ moves across the sarcolemma out of the muscle cell. F. Opening of the chemically-gated sodium channels. G. Opening of the voltage-gated sodium channels. H. Opening of potassium channels. I. Binding of calcium ions to Troponin C. J. Uptake of ATP by the myosin heads. K. Attachment of actin-myosin crossbridges and swiveling of the myosin heads. Score: Value Feedback 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 0% 0.5/0.5 16. post-tetanic potentiation Repeated use of a particular neural pathway, such as in a rote task, will result in a temporary facilitation of the pathway called: Student Response A. saltatory conduction B. post-tetanic potentiation Value 0% 100% C. temporal summation D. spatial summation 0% 0% Score: Feedback 0.5/0.5 17. excitation of heart Receptors which mediate excitation of the heart in response to stress are: Student Response A. cholinergic, nicotinic B. cholinergic, muscarinic C. adrenergic, alpha D. adrenergic, beta Score: 0.5/0.5 Value 0% 0% 0% 100% Feedback 18. choroid plexus Cerebrospinal fluid is a filtrate from the capillaries of the: Student Response choroid plexus A. Value 100% B. falx cerebri C. superior sagittal sinus D. septum pellucidum 0% 0% 0% Score: Feedback 0.5/0.5 19. crossed extensor reflex The crossed extensor reflex consists of: Student Response A. A withdrawal reflex on one side of the body and a stretch reflex on the other side. B. A withdrawal reflex on one side of the body and a tendon reflex on the other side. C. A withdrawal reflex on one side of the body and extension on the other side. D. A withdrawal reflex on one side of the body and a flexor reflex on the other side. Score: Value Feedback 0% 0% 100% 0% 0.5/0.5 20. substantia nigra The brain region involved when insufficient dopamine production produces Parkinson's disease: Student Response Value A. thalamus B. hypothalamus C. substantia nigra 0% 0% 100% D. basal nuclei E. pons 0% 0% Score: 0.5/0.5 View Attempt 16 of unlimited Title: Alternate Substitute Quiz Started: December 6, 2008 5:15 PM Submitted: December 6, 2008 5:17 PM Time spent: 00:02:03 Total score: 8.5/10 = 85% Total score adjusted by 0.0 Maximum possible score: 10 1. paranasal sinuses Match the sinus with its letter. paranasal_sinuses.jpg Frontal Sinus Ethmoid sinus Feedback Sphenoid sinus Maxillary sinus Mastoid sinus D E B A C Statement Frontal Sinus Ethmoid sinus Sphen...
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This note was uploaded on 01/29/2013 for the course BIOL 239 taught by Professor Swan during the Fall '12 term at New Mexico.

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