Human Physiology - Neural Control & Coordination Questions

Biology

Human Physiology - Neural Control & Coordination Solutions

Microsoft Edge File Edit View Histor Favorites Tools Profiles Tab Window Help edmentum - Bing + Up: 65 days 45 x 38% e The Digestive and Excretory S X FH 3:35 PM QE 1. FREE Indiana BMV Practice Pe: X FREE Indiana BMV Road Signs X https://t1.app.edmentum.com/assessments-delivery/ua/mt/launch/49073343/45384969/aHROCHM6Ly9MMS5hcHAUZWRtZW50aW0uY29tL2xlY... Office 365 Canvas Skyward honey cake pictur... HSE Schools w To G Other Favorites Previous 2 Next The Digestive and Excretory Systems: Mastery Test Submit Test E Tools into 2 Lydia is walking in the woods at night to observe owls. She hears a rustling behind a tree, which startles her and causes her body to go into a fight or flight response as the sympathetic nervous system is activated. What is likely to happen to her digestive system during this response? OA The enteric nervous system will slow down digestion to conserve energy. OB. The peripheral nervous system will speed up digestion to use energy. The peripheral nervous system will slow down digestion to conserve energy. OC. OD. The enteric nervous system will speed up digestion to use energy. Reset Next

Biology

Human Physiology - Neural Control & Coordination Solutions

A typical action potential in a neuron is caused by which one of the following processes? A) a brief increase in Na+ permeability followed by a brief increase in K+ permeability B) a large increase in the intracellular concentration of Na+ ions C) a large increase in the intracellular concentration of K+ ions D) a surge in the activity of the Na+/K+ pump E) a simultaneous increase in the permeability of the membrane to both Na+ and K+ ions

Biology

Human Physiology - Neural Control & Coordination Solutions

Which one of the following statements is incorrect? A) Blocking voltage-gated K+ channels in the presynaptic membrane of a typical chemical synapse is likely to reduce the amount of neurotransmitter released in response to a single action potential in the presynaptic axon. B) A single type of neurotransmitter can have different postsynaptic actions depending on the type of receptor to which it binds. C) In the optic tectum of the hunting rattlesnake, spatial summation is used to combine inputs from visual and thermoreceptive layers in order to make a decision whether to strike at a mouse-like object. D) Temporal summation occurs when a single synaptic input is activated twice in succession, with the second postsynaptic potential occurring before the first postsynaptic potential is over.

Biology

Human Physiology - Neural Control & Coordination Solutions

At the excitatory synapse between motor axons and skeletal muscle fibers, acetylcholine is the neurotransmitter released. When acetylcholine binds to its postsynaptic receptor, a channel opens that is about equally permeable to Na+ and K+ ions. Given this situation, the net current through the channel would flow inward. A) True B) False

Biology

Human Physiology - Neural Control & Coordination Solutions

A typical action potential in a neuron is caused by which one of the following processes? A) a brief increase in Na+ permeability followed by a brief increase in K+ permeability. B) a large increase in the intracellular concentration of Na+ ions. C) a large increase in the intracellular concentration of K+ ions. D) a surge in the activity of the Na+/K+ pump. E) a simultaneous increase in the permeability of the membrane to both Na+ and K+ ions.

Biology

Human Physiology - Neural Control & Coordination Solutions

Action potentials are usually propagated in only one direction along an axon because... A) the refractory period prevents the immediate re-opening of voltage-gated Na+ channels. B) both the voltage-gated Na+ channels and K+ channels open only in one direction. C) ions can flow along the axon only in one direction. D) the axon hillock has a larger resting potential than the cell body. E) the nodes of Ranvier conduct in only one direction.

Biology

Human Physiology - Neural Control & Coordination Solutions

Which one of the following statements is incorrect? A) If released neurotransmitter increases the permeability of both Na+ and K+ ions in the postsynaptic membrane, the synapse is likely to be excitatory. B) Inhibiting the enzyme that degrades released neurotransmitter is likely to reduce the amplitude of the postsynaptic potential. C) In the presynaptic membrane, voltage-gated Ca2+ channels are located very close to the sites of vesicle exocytosis. D) Blocking voltage-gated K+ channels in the presynaptic membrane is likely to increase the amplitude of the postsynaptic potential.

Biology

Human Physiology - Neural Control & Coordination Solutions

What is the threshold stimulus (V) in the calf muscle with a 40g load? A. 9.0 B. none C. 7.0 D. 8.0

Biology

Human Physiology - Neural Control & Coordination Solutions

Which of the following best describes how to achieve surface signaling activity in activating or inactivating gene regulation in mammalian cells? A. Steroids carry out the following activities to achieve signaling in mammalian cells: bind the G-protein coupled receptors; the G-proteins activate cytoplasmic adenylyl cyclases to split ATP into CAMP and pyrophosphate; CAMP binds protein Kinase-A and translocates into the nucleus to phosphorylate CREB proteins, causing their binding to dimeric CRB protein that interact with DNA and activate or inactivate gene regulation. B. Small protein molecules carry out the following activities to achieve signaling in mammalian cells: bind the G-protein coupled receptors; the G-proteins activate cytoplasmic adenylyl cyclases to split ATP into CAMP and pyrophosphate; CAMP binds protein Kinase-A and translocates into the nucleus to phosphorylate CREB proteins, cousing their binding to dimeric CRB protein that interacts with DNA and activates or inactivates gene regulation. C. Enzymatic proteins carry out the following activities to achieve signaling in mammalian cells: bind the G-protein coupled receptors; the G-proteins activates cytoplasmic adenylyl cyclases to split ATP into CAMP and pyrophosphate; CAMP binds protein Kinase-A and translocates into the nucleus to phosphorylate CREB proteins, causing their binding to dimeric CRB protein that interacts with DNA and activates or inactivates gene regulation. D. Answers A, B and C are the correct answer choices for this question. E. Answers A and C are the correct answer choices for this question. DONEPLUS

Biology

Human Physiology - Neural Control & Coordination Solutions

Studying the folding patterns of protein molecules can help microbiologists better understand cellular processes as well as some diseases, such as Alzheimer's, that are caused by proteins that have misfolded. The folding of these complicated molecules can be simulated on computers, but it takes a lot of processor power and time for even expensive supercomputers to do this. A group of researchers at Stanford University developed software that can be used to distribute the processing of data to anyone who is willing to donate time on their idle personal computers. As a result, the researchers have been able to achieve protein-folding simulations that are far better than those other computing methods have done. Which statement best describes the work of these researchers? a) The work is not scientific because the data are not processed in one location. b) The work is not scientific because the simulations are not reproducible. c) The researchers applied creativity to solve a problem in running an experiment. d) The researchers used only well-established scientific techniques.

Biology

Human Physiology - Neural Control & Coordination Solutions

Which of these best describes a partial agonist? O its effects differ depending on the concentration of the neurotransmitter in question O it acts as both an agonist and an antagonist at the exact same time for the exact same synapse O it always has the same effects regardless of the concentration of neurotransmitters

Biology

Human Physiology - Neural Control & Coordination Solutions

Which of these brain structures are implicated in OCD but not some of the other anxiety disorders, and what might this be potentially related to? O basal ganglia; compulsive actions (like hand washing) O amygdala; worrying O basal ganglia; obsessive thoughts (like wondering if you checked the stove) O hippocampus; obsessive thoughts (like wondering if you checked the stove)