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ANATOMY # 3
ANATOMY FINAL PREPARATION # 3
| Question | Answer |
|---|---|
| The ventral rami of most spinal nerves subdivide to form complex networks called | plexuses. |
| The three divisions of the brain that make up the brainstem are the | medulla oblongata, midbrain, and pons. |
| Dendrites and cell bodies of sympathetic preganglionic neurons are located in the | gray matter of the thoracic and upper lumbar segments of the spinal cord. |
| If you trace the axon inside the sympathetic chain ganglion, the preganglionic fiber branches along which pathway? | all of the above |
| The enteric nervous system is made up of a complex network of nerve plexuses that control the visceral effectors in the | intestinal wall. |
| Individual nerves that emerge from the _____ plexus innervate the lower part of the shoulder and the entire arm. | Brachial |
| The dorsal root of each spinal nerve is easily recognized as a swelling called the | dorsal root ganglion. |
| Some parasympathetic postganglionic neurons have their cell bodies in nuclei in the brainstem. | False |
| The layer of the meninges that serves as the inner periosteum of the cranial bone is the: | Dura meter |
| Which of the following is not true of the lateral corticospinal tract fibers? | Most inhibit the lower motor neuron. |
| If you were to damage some of the preganglionic fibers that enter the celiac ganglion, what effect would this have on sympathetic stimulation? | Hormones secreted by the adrenal medulla may not reach the various sympathetic effectors, thus delaying the effects of sympathetic stimulation. |
| A patient complains of numbness in the skin of the buttocks and the posterior surface of the thigh and leg. The spinal nerve or peripheral branch most likely involved with this condition is the _____ plexus. | coccygeal |
| Parasympathetic neuron cell bodies are located in: | nuclei of the brainstem and the lateral gray columns of the sacral cord. |
| The innermost layer of the meninges is the: | pia mater. |
| The part(s) of the cerebrum associated with anger, fear, and sorrow is (are) the: | limbic system. |
| The sensory cranial nerves include only the: | olfactory, optic, and vestibulocochlear. |
| Impulses from which system play a part in arousing or alerting the cerebrum? | Reticular activating system |
| Spinal nerves are _____ fibers. | motor and sensory |
| Nerve fibers of the spinothalamic tract are: | sensory. |
| All of the following cranial nerves have a functional classification of motor except: | vestibulocochlear. |
| Several “vital centers” are located in the: | medulla. |
| The main divisions of the central nervous system are the: | brain and spinal cord. |
| Which of the following might occur from the stimulation of parasympathetic fibers? | Increased peristalsis in the digestive tract |
| Which is not true about sympathetic postganglionic neurons? | They produce acetylcholine. |
| Cerebrospinal fluid is found in all of the following except the: | subdural space. |
| The peripheral nervous system includes: | only cranial nerves, spinal nerves, and their branches. |
| Which of the following is not a plexus of the spinal nerves? | Thoracic |
| The pyramids are formed in the: | medulla. |
| All of the following are characteristics of sympathetic preganglionic neurons except: | they have long fibers from CNS to ganglion. |
| Which part of the vertebral column has one more pair of nerves coming from it than it has vertebrae? | Cervical |
| Bony labyrinth structure containing the utricle and saccule. | vestibule |
| Which of the following statements does not correctly describe the spiral organ of Corti? | The tectorial membrane bends with vibrations, whereas the basilar membrane is rigid and fixed. |
| Membrane attached to the stapes. | oval window |
| Gel-like structure embedded with the tips of cochlear hair cells. | tectorial membrane |
| Class of hormones secreted during chronic stress that depress immune function. | glucocorticoids |
| Gustatory cells are located in all of the following areas except | on the apical surface of vallate papillae on the tongue. |
| Which endocrine gland stores enough of its hormone extracellularly to last several months? | the thyroid |
| The basilar membrane supports the | spiral organ. |
| Which of the following is not part of the flow of taste sensation along the gustatory pathway to the cerebral cortex? | hypothalamic appetite centers |
| Region of the hypophysis that contains secretory endocrine cells derived from the oral ectoderm. | adenohypophysis |
| Pyramid-shaped gland consisting of neural crest-derived cells and endocrine secretory cells. | adrenal gland |
| Which of the following endocrine glands develops primarily from the endoderm of the pharynx? | thyroid and parathyroids |
| Which of the following areas has the highest concentration of cones? | the fovea centralis |
| Melanin-containing layer of the eye's vascular tunic. | choroid |
| The anatomical stalk of the pituitary is also known as | infundibulum. |
| Fluid filling the posterior segment of the eye. | vitreous humor |
| Receptors for hearing are located in the | cochlear duct. |
| Endolymph is made | in the stria vascularis. |
| Region of the adrenal cortex that secretes DHEA. | zona reticularis |
| Largest purely endocrine gland in the body. | thyroid gland |
| The term used to describe the collection of mechanisms that influence the circulation of blood is: | hemodynamics. |
| Blood viscosity stems mainly from the red blood cells but also partly from the _____ in blood. | protein molecules present |
| During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? | It flows into the inferior vena cava. |
| The _____ is(are) supplied with blood from the left subclavian artery. | head and upper extremities |
| A glycoprotein hormone that is secreted to increase oxygen concentration in the tissues is | erythropoietin. |
| Erythrocytes begin their maturation sequence in red bone marrow from nucleated cells known as: | hematopoietic stem cells. |
| The brachiocephalic vein drains blood from the | head, neck, and upper extremity. |
| The _____ drains much of the superficial leg and foot. | great saphenous vein |
| The heart valves that are located where the trunk of the pulmonary artery joins the right ventricle and where the aorta joins the left ventricle are called | semilunar valves. |
Created by:
alainlemesse
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