Question 1 (1 point) Listen The average rate of breathing in an adult at rest is â—» breaths per minute. 5 to 10 12 to 20 15 to 20 20 to 30 Question 2 (1 point) Listen Sensations such as smell, touch, heat, and sound are carried from the body to the brain and spinal cord by: motor nerves. sensory nerves. cerebrospinal fluid. plasma.
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The dorsal horn of the spinal cord contains: - cell bodies of sensory neurons - interneurons receiving sensory input - visceral motor neurons - somatic motor neurons 2. The fluid contained in the fourth ventricle is circulated (moved around) by the activity of: - oligodendrocytes - arachnoid granulations - astrocytes - ependymal cells 3. Neurons in the postcentral gyrus are: - interneurons - motor neurons - Schwann cells - sensory neurons 4. The gyrus anterior to the arrows contains the: - primary visual cortex - primary auditory cortex - primary somatosensory cortex 5. Which of the following is not true about reflexes? - reflexes can be acquired/learned - we are born with some reflexes (inborn) - reflexes are limited to one side of the body - all reflexes have the same five components 6. Effectors of the autonomic nervous system respond to: - epinephrine exclusively - none of the choices listed here - epinephrine or acetylcholine - acetylcholine exclusively 7. Paravertebral ganglia are associated with the: - sympathetic division - parasympathetic division - somatic motor division
Sri K.
16. A Josh who ran in the New York City marathon noticed that while his legs were moving in a normal automatic rhythm, he was still able to relax and think about other matters. What part of the brain is most likely in charge of the movement of his legs as he let his mind wander? Medulla Superior colliculi Red Nuclei Pons Substantia Nigra 19. Saltatory conduction is seen in _______ axons and is caused by action potentials occurring in the _________. Myelinated; nodes of Ranvier Myelinated; axon hillock Unmyelinated; nodes of Ranvier Myelinated; myelinated regions of the axon None of the above 22. The release of an activating neurotransmitter from one presynaptic neuron is most likely to cause which of the below results? An IPSP Neural summation An EPSP Always causes an action potential Neural facilitation 28. Which of the below statements is FALSE regarding a local (or graded) potential? It can lead to depolarization of the plasma membrane. It can lead to hyperpolarization of the plasma membrane. Can fizzle out if threshold is not reached. It can be activated by the release of ligands, stretch of receptors, or spontaneously. It always leads to depolarization and an action potential. 34. A network of capillaries in the brain that produces cerebrospinal fluid is called the ____. Dural sinus; ependymal cells Choroid plexus; microglia Spinal canal; astrocytes Choroid plexus; ependymal cells Arachnoid villus; astrocytes 36. Which area of the neuron is the site of action potential transmission in the axon? Body Dendrites The axon hillock The synaptic knobs Dendritic spines The neurons that cause the heart rate to increase most likely have cell bodies found in this area? Dorsal horn Dorsal root ganglion Ventral horn Lateral horn Medial horn
Madhur L.
1. The central nervous system consists of the _______ and _______. 2. _______ are highly branched structures found on neurons that receive impulses. 3. _______ is a fatty substance that acts as insulation for many axons. 4. List the meninges in order from outer layer to inner layer: a. _______ b. _______ c. _______ d. _______ e. _______ 5. The _______ lobe of the cerebrum controls vision. 6. The elevated portions of the cerebral convolutions are called _______ and they are separated by fissures called _______. 7. The midbrain, pons, and medulla oblongata make up the _______. 8. Pain perception is controlled by the _______. 9. The point at which a nerve is attached to the central nervous system is called the _______ 10. The _______ branch of the ANS is the "fight-or-flight" branch and the _______ branch of the ANS is the "rest-and-digest" branch.
Adi S.
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