Homeostasis Practice Quiz 20 Questions SBI 4UI

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Homeostasis Practice Quiz 20 Questions SBI 4UI

Question 1 Which system reverses a change in a variable, bringing it back to within a normal range? a. negative feedback system b. positive feedback system c. the nervous system d. a regulatory system

Question 2 You touch a hot stove and withdraw your hand before you perceive pain. Identify the neural pathway involved in this response. a. stimulus motor neuron interneuron brain sensory neuron effector b. stimulus sensory neuron interneuron brain motor neuron effector c. stimulus sensory neuron interneuron motor neuron effector d. effector motor neuron interneuron sensory neuron stimulus

Question 3 Which of the following is NOT a response associated with the mammalian diving reflex? a. lower heart rate b. increase metabolic demands c. restrict blood flow d. all of the above are responses associated with the mammalian diving reflex

Question 4 TRUE OR FALSE? Endotherms are able to maintain constant body temperature regardless of their surroundings.

Question 5 A rapid increase in external temperature would be followed by which homeostatic adjustment in humans? a. an increase in blood flow to the arms and an increase in perspiration b. the formation of goosebumps and shivering c. an increased heart rate and decreased blood flow to the arms d. decreased blood flow to the arms and shivering

Question 6 Match each structure in the list with the correct function: 1. sensory neuron a. carries nerve impulse away from the cell body 2. action potential b. motor nerves not under conscious control 3. acetylcholine c. caused by the reversal of charge across a nerve membrane 4. axon d. a neurotransmitter 5. refractory period e. carries information about the environment to the brain 6. occipital lobe f. area of the cerebral cortex responsible for understanding speech 7. autonomic nerves g. area of the cerebral cortex responsible for vision 8. temporal lobe h. the time required before another action potential can be produced

Question 7 Which of the following is NOT a structure of the forebrain? a. thalamus b. cerebellum c. cerebrum d. hypothalamus

Question 8 The structure labelled A is: dendrite axon axon terminal myelin sheath

Question 9 The structure labelled B is: dendrite axon axon terminal myelin sheath

Question 10 The resting membrane potential of a typical neuron is: a. +40 mv b. -40 mv c. +70 mv d. -70 mv

Question 11 During an action potential, the rapid inflow of sodium ions causes charge reversal known as: a. repolarization b. resting membrane potential c. depolarization d. refractory period

Question 12 Which correctly describes the distribution of ions on either side of an axon when it is not conducting a nerve impulse? a. Cl - ions outside and Na + and K + inside b. more K + outside and Na + inside c. more Na + outside and K + inside d. charged protein outside and only water inside

Question 13 The minimum level of stimulus required to produce a response is: a. action potential b. repolarization c. depolarization d. threshold

Question 14 If a neurotransmitter stimulates receptor proteins that trigger depolarization, it is considered: a. refractory b. excitatory c. inhibitory d. synaptory

Question 15 The bundle of white matter that connects the right and left hemispheres is called the: a. cerebrum b. corpus callosum c. meninges d. hypothalamus

Question 16 Which structure of the forebrain is the largest part of the brain and is the centre for intellect, learning and memory, consciousness and language? a. cerebrum b. medulla oblongata c. hypothalamus d. cerebellum

Question 17 Identify the parts of the Cerebral cortex that perform the following functions: a. Seeing this question b. Thinking about this question c. Hearing this question read to you from someone else a. Feeling you have a pen/pencil in your hand and knowing where your hand is.

Question 18 Which of the following is false? a. White matter has myelinated axons. b. Grey matter has myelinated axons. c. Grey matter is found around the outside areas of the brain. d. Grey matter is found in the H-shaped core of the spinal cord.

Question 20 Which of the following is NOT an effect of the Sympathic Nervous System? a. Dilated pupils. b. Faster heart rate. c. Liver releases glucose. d. Gall bladder releases bile. THE END

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