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Anatomy
Week 8 Chapter 20, 21, & 22
| Question | Answer |
|---|---|
| Which letter indicates the region of the brain that has the greatest surface area due to the numerous surface convolutions? | A |
| Which letter indicates the medulla oblongata, the functional neural connection between the pons and the spinal cord? | E |
| Which letter indicates a bulbous corpuscle (Ruffini ending) that slowly adapts to deep pressure stimuli? | E |
| Which letter indicates the cranial nerve that transmits olfactory impulses? | A |
| The three divisions of the brain that make up the brainstem are the | medulla oblongata, midbrain, and pons. |
| Which letter indicates the cranial nerve that has motor fibers that innervate muscles of facial expression? | D |
| The large fluid-filled spaces within the brain are called the | ventricles. |
| Which letter indicates the celiac ganglion and plexus? | C |
| Which letter indicates epithelial tactile complexes (Merkel discs), light pressure receptors found in the epidermis? | A |
| Which letter indicates the aortic plexus? | D |
| Which letter indicates the cranial nerve with nerve fibers that pass through the hypoglossal canal? | E |
| Which letter indicates the cranial nerve that has three major branches? | C |
| The two efferent divisions of the autonomic nervous system are the | sympathetic and parasympathetic divisions. |
| The dorsal root of each spinal nerve is easily recognized as a swelling called the | dorsal root ganglion. |
| Which letter indicates Broca's area, which controls the motor movements necessary for speaking? | A |
| Which letter indicates a choroid plexus, which produces cerebrospinal fluid (CSF) in all four ventricles of the brain? | C |
| Which letter indicates an area that is characterized by huge neurons known as pyramidal cells? | B |
| 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. |
| Which letter indicates the pelvic sympathetic trunk? | E |
| Which letter indicates the cardiac plexus? | B |
| Which letter indicates a tactile corpuscle (Meissner's corpuscle) that is responsive to light pressure? | B |
| Spinal cord tracts provide conduction paths to and from the brain. The tracts that conduct sensory impulses down the cord from the brain are called _____ tracts. | descending |
| Which letter indicates the primary visual cortex, which receives information from neurons in the retina of the eye? | E |
| Individual nerves that emerge from the _____ plexus innervate the lower part of the shoulder and the entire arm. | brachial |
| Which letter indicates the structure where cranial nerve fibers from the retina cross to the opposite side of the brain? | B |
| A subdivision of the nervous system that regulates involuntary effectors is the _____ nervous system. | autonomic |
| The enteric nervous system is made up of a complex network of nerve plexuses that control the visceral effectors in the | intestinal wall. |
| The lower end of the spinal cord, with its attached spinal nerve roots, gives the appearance of a horse’s tail called the | cauda equina. |
| The inner protective covering of the brain is called the | meninges. |
| Which letter indicates Wernicke's area, which is important for understanding spoken words? | D |
| Which letter indicates the primary somatosensory cortex? | C |
| Which letter indicates a lamellar corpuscle (Pacinian corpuscle) that rapidly adapts to deep pressure stimuli? | D |
| Which letter indicates the corpora quadrigemina, meaning "four bodies"? | D |
| The ventral rami of most spinal nerves subdivide to form complex networks called | plexuses |
| Which letter indicates the left vagus nerve? | A |
| If you trace the axon inside the sympathetic chain ganglion, the preganglionic fiber branches along which pathway? | synapses with a sympathetic postganglionic neuron , sends ascending or descending branches through the sympathetic trunk to synapse with postganglionic neurons in other chain ganglia , passes through one or more ganglia without synapsing |
| Which letter indicates the corpus callosum, which is an area of white matter where axons from one cerebral hemisphere cross the midline to the opposite hemisphere? | B |
| Which letter indicates receptors that respond chiefly to pain and temperature? | C |
| How many pairs of spinal nerves are connected to the spinal cord? | 31 |
| Formation of the cerebrospinal fluid occurs in the | choroid plexus. |
| There are _____ ventricles in the brain. | 4 |
| Which is not true about sympathetic postganglionic neurons? | They produce acetylcholine. |
| Spinal nerves are _____ fibers. | motor and sensory |
| The peripheral nervous system includes: | only cranial nerves, spinal nerves, and their branches. |
| The layer of the meninges that serves as the inner periosteum of the cranial bone is the: | dura mater. |
| The innermost layer of the meninges is the: | pia mater. |
| Parasympathetic neuron cell bodies are located in: | nuclei of the brainstem and the lateral gray columns of the sacral cord. |
| Which of the following is not a plexus of the spinal nerves? | Thoracic |
| Which of the following might occur from the stimulation of parasympathetic fibers? | Increased peristalsis in the digestive tract |
| Some parasympathetic postganglionic neurons have their cell bodies in nuclei in the brainstem. | false |
| The cervical plexus: | is found deep in the neck, is formed by the ventral rami of the first four cervical nerves and part of C5, includes the phrenic nerve. |
| Nerve fibers of the spinothalamic tract are: | sensory. |
| 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 |
| Which part of the vertebral column has one more pair of nerves coming from it than it has vertebrae? | Cervical |
| The autonomic nervous system includes only efferent neurons. | false |
| Visceral effectors are innervated by sympathetic fibers. | true |
| The sensory cranial nerves include only the: | olfactory, optic, and vestibulocochlear. |
| The spinal nerves are connected to the spinal cord and consist of _____ pairs. | 31 |
| The main divisions of the central nervous system are the: | brain and spinal cord. |
| Beta receptors: | bind norepinephrine. |
| Which of the following cranial nerves is responsible for movements of the tongue? | Hypoglossal |
| Cerebrospinal fluid is found in all of the following except the: | subdural space. |
| Impulses from which system play a part in arousing or alerting the cerebrum? | Reticular activating system |
| Axon terminals that secrete acetylcholine are called cholinergic terminals. | true |
| The areas specializing in language functions are found in the left cerebral hemisphere in: | about 90% of the population. |
| The nerve commonly called the vagus nerve is the _____ cranial. | tenth |
| “Fight-or-flight” physiological changes include all of the following except: | constriction of respiratory airways. |
| The pyramids are formed in the: | medulla |
| Effectors that have single innervation by the autonomic nervous system are innervated only by the parasympathetic division. | false |
| Conduction to autonomic effectors requires only one efferent neuron. | false |
| The brain has _____ major divisions. | 6 |
| Which plexus contains nerves that innervate the lower part of the shoulder and the entire arm? | Brachial |
| The lumbar plexus gives rise to the _____ nerve. | femoral |
| The part(s) of the cerebrum associated with anger, fear, and sorrow is (are) the: | limbic system. |
| Several “vital centers” are located in the: | medulla |
| All of the following cranial nerves have a functional classification of motor except: | vestibulocochlear |
| Sensory neurons can operate in autonomic reflex arcs. | true |
| Which part of the brain releases the hormone melatonin? | Pineal gland |
| All of the following are characteristics of sympathetic preganglionic neurons except: | they have long fibers from CNS to ganglion. |
| The cranial nerve that arises from the spinal cord is the: | accessory |
| The brainstem does not include the: | cerebellum. |
| The phrenic nerve is found in the _____ plexus. | cervical |
| All cell bodies of the autonomic nervous system are located within the CNS. | false |
| 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. |
| Which of the following is not true of the lateral corticospinal tract fibers? | Most inhibit the lower motor neuron. |
Created by:
ashleysummers
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