Electro-neurophysiology question part 4 of 4: Interestingly, it is indeed still possible to produce an action potential in neurons of a patient taking potassium channel blocker medications. In this case, the undershoot would be

EXTRA CREDIT Q2. (6 possible points) If you studied the “Focus on Homeostasis” extra credit slides that were posted, then for 3 points each, list both the overall contributions of the following organ systems we covered in this unit that apply to all body systems as well as their contributions that individually apply to each of the other 10 organ systems.  For the nervous system, list the following:  ·       Its general contributions to all body systems listed in detailed bullets (0.5 pts)  ·       Its specific contributions to the other 10 systems listed in detailed bullets (2.5 pts total)  For the muscular system, list the following:  ·       Its general contributions to all body systems listed in detailed bullets (0.5 pts)  ·       Its specific contributions to the other 10 systems listed in detailed bullets (2.5 pts total)

After a complete meal, blood glucose is usually high and thus more glucose enters pancreatic beta cells through GLUT transporter. As potassium cations remain in the cell this leads to membrane (depolarization OR hyperpolarization) which causes voltage-gated Ca2+ channel to (open OR close) which ultimately results in insulin-filled vesicles to (remain in the cell OR undergo exocytosis).

The convergence projection theory of referred pain states that nociceptors from several locations, for example, the sensory neurons leaving the kidneys and skin of the abdominopelvic area, converge on a single__________ causing the cerebral cortex to confuse kidney tissue damage with activation of the more common pathway in the skin.

What condition causes blurred vision due to the cornea and/or lens not being perfectly shaped?     

Endolymph is a unique fluid in the cochlear duct and parts of the vestibular apparatus that contains more __ ions (just give chemical symbol) than the typical extracellular fluid.  

Resting muscles store energy from ATP in the “high-energy” phosphate bonds of ________________(can be listed as one word or two). Hint: the enzyme that catalyzes the reaction which produces this energy source can do so reversibly.

*Large points here (7) so be complete* You knew this was coming, here we go: Per the summary map and navigator of chapter 12, provide a sequential step-by-step description of the following interrelated processes (for each write about 4-6 clear logical bullet-list sentences, so about 12-18 in total): a) Specific events at the synapse-like space called the neuromuscular junction (NMJ) including events on both the presynaptic and postsynaptic side starting with an action potential arriving at the synaptic end bulb of a somatic motor neurons and ending at development of a muscle action potential (include the neurotransmitter involved, voltage-gated channel types, ligand-gated/receptor-channel types and action upon neurotransmitter binding, degradation enzyme, and endplate potential generation). 3 pts b) Specific events of excitation-contraction (EC) coupling leading to SR calcium release the contraction (crossbridge) cycle as explained by the sliding filament theory followed by the relaxation process (include all muscle fiber structures involved). 3 pts c) Describe, in the correct order of events, all the individual detailed specifics that lead to rigor mortis, AKA postmortem rigidity, and what ends the process (make sure to include all sites in the contractile cycle that are affected). 1 pts

_______________hearing loss results from conditions that affect the ability of sound waves that have entered the external ear from generating/transmitting a vibration in the middle ear (and thus can’t reach the cochlea of the inner ear).  

Premature babies frequently need to be put on a respirator to help them breathe despite having smaller alveoli which via the law of Laplace should prevent lung collapse. This is called newborn or infantile respiratory distress syndrome and can result in progressive atelectasis. Why?