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The central nervous system consists of
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The epidural space contains
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Chapter 11
A & P
| Question | Answer |
|---|---|
| The central nervous system consists of | the brain and spinal cord |
| The epidural space contains | loose connective tissue, blood vessels, and adipose tissue |
| The meninges consist of | 3 layers of connective tissue including the dura mater, arachnoid mater and pia mater |
| Cerebrospinal fluid is | is a clear, colorless body fluid found in the brain and spine |
| In a subdural hematoma resulting from a blow to the head, blood accumulates between the | dura mater and arachnoid mater |
| An inflammation of the meninges called meningitis usually affect the | arachnoid mater and pia mater |
| The _______ is the thin meninx attached to the surface of the brain, containing many nerves and blood vessels. | pia mater |
| Most cerebrospinal fluid is secreted from the choroid plexus in the | lateral ventricles |
| The fourth ventricle is in the | brainstem |
| Cerebrospinal fluid (functions)? | the primary function of CSF is to cushion the brain within the skull and serve as a shock absorber for the central nervous system, CSF also circulates nutrients and chemicals filtered from the blood and removes waste products from the brain. |
| The human body secretes about ______ milliliters of cerebrospinal fluid daily. | 500 |
| Cerebrospinal fluid is produced by ______ and it _____. | venous blood in the choroid plexus; returns to arterial blood |
| Which of the following lists the parts of a reflex arc in the correct sequence? | receptor, sensory neuron, intereneuron, motor neuron, effector |
| Reflex arch help to control (what physiological process)? | the posture, the vertebral spine and other small details that help us not get injured without having to permanently think about it |
| When the flexor muscles of one arm contract in a withdrawal reflex, the extensor muscles of the other arm contract. This phenomenon is called | crossed extensor flexion |
| If the right lateral spinothalamic tract is severed | pain impulses from the left side are blocked |
| All reflexes have | a reflex arc |
| The simplest level of CNS function is the | spinal reflex |
| Stephanie is in a car accident, flung from her vehicle and landing on her back on pavement. At the scene, an emergency medical technician checks her Babinski reflex, in which the great toe extends upward and the smaller toes fan apart. This reflex | may indicate an injury to the corticospinal tract |
| The expected response to the triceps-jerk reflex is | extension of the forearm |
| The spinothalamic tract conducts impulses | up to the thalamus to the spinal cord |
| Grey matter of the spinal cord is mostly composed of | interneurons |
| The pattern of the grey matter in the spinal cord is divided into | horns |
| Which of the following are descending tracts in the spinal cord? | Lateral corticospinal tract Anterior corticospinal tract |
| The coricospinal tracts control | voluntary muscle movements |
| Over the course of several months, Morris has experienced difficulty speaking coherently, clumsiness, musle fasciculations, and increasing weakness in his limbs. These symptoms are most consistent with those of | amyotriphic lateral sclerosis |
| If the left corticospinal tract is severed in the neck near the first cervical vertebra, | muscles in the left arm and leg are paralyzed |
| If the spinal cord has (think characteristics) | 31 segments, a cervical and lumbar enlargement, and a core of gray matte surrounded by white matter. |
| The part of the brain that coordinated voluntary muscular movements is the | cerebellum |
| Which of the following is a major portion of the diencephalon? | thalmus |
| The complex network of tiny islands of gray matter in the brain, that upon receiving incoming sensory impulses responds by activating wakefulness in the cerebral cortex, is the | reticular formation |
| A newborn has a CT scan of the brain to identify a cause of seizures. The scan showed no convulsions (gyri of the cerebral cortex. She has | lissencephaly |
| If the area of the cerebral hemisphere corresponding to Broca's area is damaged | motor control of the muscles associated with speech is lost |
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Jencro0616