APHY 101 Final 2023 LATEST QUESTIONS WITH COMPLETE SOLUTIONS GRADED A+

Neurons that conduct impulses from the CNS to muscles or glands are - CORRECT ANS motor neurons. Which cells produce myelin in the brain and spinal cord? - CORRECT ANS Oligodendrocytes Every neuron has - CORRECT ANS a cell body. If a resting potential becomes more negative, the membrane is - CORRECT ANS hyperpolarized. Which of the following neuroglia are not part of the CNS? - CORRECT ANS Satellite cells Three general functions of the nervous system are - CORRECT ANS integrative, motor, and sensory. The brain and spinal cord comprise the central nervous system. - CORRECT ANS True The most rapid conduction of an impulse along an axon occurs on a fiber that is - CORRECT ANS thick and myelinated. During the absolute refractory period, a stimulus of high intensity may trigger a nerve impulse. - CORRECT ANS False The neurotransmitter that controls skeletal muscle contraction is - CORRECT ANS acetylcholine. Because the response of a nerve fiber is all-or-none, a greater intensity of stimulus does not produce a stronger impulse. - CORRECT ANS True Most of the neurons in the brain and spinal cord are - CORRECT ANS multipolar. Action potentials are related to impulses conducted along an axon in that - CORRECT ANS propagation of a series of action potentials along a nerve cell fiber constitutes an impulse. The simplest level of CNS function is the - CORRECT ANS spinal reflex. The ___________ separates the cerebrum from the cerebellum. - CORRECT ANS transverse fissure Gray matter of the spinal cord is mostly composed of - CORRECT ANS interneurons. Over a lifetime, the brain shrinks by about ___ percent. - CORRECT ANS 10 The meninges consist of - CORRECT ANS the pia mater, arachnoid mater, and dura mater. Which lobe of your brain are you using when you answer this question? - CORRECT ANS Frontal The ____________ is the thin meninx attached to the surface of the brain, containing many nerves and blood vessels. - CORRECT ANS pia mater The part of the brain that coordinates voluntary muscular movements is the - CORRECT ANS cerebellum. Cerebrospinal fluid - CORRECT ANS all of the above. The part of the brain that assigns value to a memory is the - CORRECT ANS amygdala. The dura mater is the outermost layer