Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 26, Problem 7MCQ
Summary Introduction
Introduction:
The brain comes under the central nervous system. The average weight of the brain varies from 1.4 to 1.6 kilograms. Brain is anatomically subdivided into three parts forebrain, midbrain and hindbrain. Forebrain is the front portion of the brain. Midbrain is the region that connects the forebrain to hindbrain and hindbrain is the lower back region of the brain.
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Chapter 26 Solutions
Biology: Concepts and Investigations
Ch. 26.1 - Prob. 1MCCh. 26.1 - Prob. 2MCCh. 26.1 - Prob. 3MCCh. 26.2 - Prob. 1MCCh. 26.2 - Where is the myelin sheath located?Ch. 26.2 - Prob. 3MCCh. 26.2 - What are the functions of each of the three...Ch. 26.3 - Describe the forces that maintain the distribution...Ch. 26.3 - Prob. 2MCCh. 26.3 - Prob. 3MC
Ch. 26.3 - Prob. 4MCCh. 26.3 - What prevents action potentials from spreading in...Ch. 26.3 - Prob. 6MCCh. 26.3 - How do myelin and the nodes of Ranvier speed...Ch. 26.4 - Describe the structure of a synapse.Ch. 26.4 - Prob. 2MCCh. 26.4 - Prob. 3MCCh. 26.4 - Prob. 4MCCh. 26.5 - Prob. 1MCCh. 26.5 - Prob. 2MCCh. 26.5 - Prob. 3MCCh. 26.5 - Prob. 4MCCh. 26.6 - Prob. 1MCCh. 26.6 - Prob. 2MCCh. 26.6 - Prob. 3MCCh. 26.6 - List some structures that protect the central...Ch. 26.6 - Prob. 5MCCh. 26.7 - The researchers conducted a behavioral experiment...Ch. 26.7 - Prob. 2MCCh. 26 - Some cells of the central nervous system are...Ch. 26 - Prob. 2MCQCh. 26 - What event triggers an action potential? a....Ch. 26 - Prob. 4MCQCh. 26 - Prob. 5MCQCh. 26 - Prob. 6MCQCh. 26 - Prob. 7MCQCh. 26 - Damage to the surface tissue of the spinal cord...Ch. 26 - Prob. 9MCQCh. 26 - Describe some invertebrate nervous systems. Why do...Ch. 26 - Prob. 2WIOCh. 26 - Prob. 3WIOCh. 26 - Prob. 4WIOCh. 26 - What is the connection between the threshold...Ch. 26 - Write a nonbiological analogy for resting...Ch. 26 - Prob. 7WIOCh. 26 - Sketch a synapse: label the axon and synaptic...Ch. 26 - Describe the events that occur at a synapse when a...Ch. 26 - Prob. 10WIOCh. 26 - Prob. 11WIOCh. 26 - Cerebral palsy is a nervous system disorder that...Ch. 26 - Traumatic brain injury can occur when a person...Ch. 26 - Prob. 14WIOCh. 26 - Prob. 15WIOCh. 26 - Prob. 16WIOCh. 26 - Prob. 1PITCh. 26 - Prob. 2PITCh. 26 - PULL IT TOGETHER 4. Acid the somatic, autonomic,...
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- 11)The largest part of the human brain is the a. cerebellum.b. medulla oblongata.c. corpus callosum.d. cerebrum. 12) The part of the brain that connects the two hemispheres of the cerebrum and carries information between the hemispheres is the a. pons.b. medulla.c. cerebellum.d. corpus callosum.arrow_forwardThe vast majority of neurons are located in the a. Outer bulges of the neocortex b. Cerebellum and brainstem C. Autonomic Nervous System d. Creases in the neocortexarrow_forwardThe thoracic spinal cord has the smallest dorsal horn area because: a. the trunk is the most innervated area of the body and therefore there are more projections into the dorsal horn there. b. the trunk is the least innervated area of the body and therefore there are fewer projections into the dorsal horn there. c. most of the descending upper motor neurons have already entered the ventral horn. d. There are many motor neurons to control the small muscles around the spine.arrow_forward
- The falx cerebelli separates the: a. two hemispheres of the cerebellum b. cerebellum from cerebrum c. two hemispheres of cerebrum d. dura mater from arachnoid materarrow_forwardMark the following statements about the brain as true or false. If a statement is false, correct it to make a true statement.a. Humans use only 10% of their brains.b. The four main components of the brain are the cerebrum, the diencephalon, the cerebellum, and the brainstem.c. The right and left lateral ventricles are the largest of the ventricles in the brain and are located in the diencephalon.d. The cerebrum is responsible for our basic, involuntary homeostatic functions and reflexesarrow_forwardIn which part of the brain does decussation of descending tractsinvolved in the conscious control of skeletal muscles occur?a. cerebrum d. ponsb. diencephalon e. medulla oblongatac. midbrainarrow_forward
- To separate the brainstem from the rest of the brain, a cut would haveto be made between thea. medulla oblongata and pons.b. pons and midbrain.c. midbrain and diencephalon.d. thalamus and cerebrum.e. medulla oblongata and spinal cordarrow_forward44) What part of the limbic system plays an important role in emotions, especially fear and anger?a. Amygdala.b. Hippocampus.c. Hypothalamus. d. Thalamus. 45) Creativity and artistic ability are usually associated with thea. left side of the cerebrum. b. right side of the cerebrum. c. cerebellum.d. medulla.arrow_forward34) The Limbic system includes thea. amygdala, hypothalamus, hippocampus.b. hypothalamus, medulla, hippocampus.c. hippocampus, pons, thalamus.d. cerebellum, pons, hypothalamus. 35) Glial cells that produce the myelin sheath in the CNS are a. microglia ceIls. b. oligodendrocYtes. c. astrocYtes. d. all of the above.arrow_forward
- The middle cerebellar peduncle directly connects the cerebellum to the a. Midbrain b. Motor cortex c. Pons d. Spinal cordarrow_forwardThe autonomic nervous system is part of the a. central nervous system. b. peripheral nervous system. c. sympathetic nervous system. d. parasympathetic nervous system.arrow_forwardThe brain stem does not include the: a. pons b. medulla oblongata c. mid brain d. thalamusarrow_forward
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