A&P II Module 2 exam

This is the most superficial layer of the brain meninges. - Dura mater This layer of the meninges is tightly attached to the brain - Pia mater The _____ fissure separates the cerebrum from the cerebellum. - Transverse The _____ fissure separates the right and left cerebral hemispheres. - Median longitudinal What is the purpose of the blood-brain barrier? Describe its maintenance from a cellular level. - The blood-brain barrier is a diffusion barrier which prevents most particles from entering the central nervous system tissue, keeping the brain and spinal cord separate from general blood circulation. The blood-brain barrier is formed by the relatively impermeable brain capillaries, due to the glial cells astrocytes. Maintenance of the blood-brain-barrier is important to provide a stable chemical environment for the nervous system. Describe the function of the brain ventricles. - There are four ventricles in the interior of the brain, chambers filled with cerebrospinal fluid which is produced there. Once formed the CSF circulates through the ventricles and into the subarachnoid space bathing and floating the brain. All of the following are functions of the hypothalamus except: a. Maintain homeostasis b. Controls the pituitary gland c. Links the nervous and endocrine systems d. Relays sensory impulses to the cerebrum - d. Relays sensory impulses to the cerebrum All of the following are functions of the hypothalamus except: a. Regulates sleep b. Links the nervous and endocrine systems c. Filters out unimportant sensory information d. Regulates water balance - c. Filters out unimportant sensory information What is the largest portion of the brain? a. Cerebellum b. Cerebrum c. Corpus collosum d. Cingulate gyrus - b. Cerebrum This ventricle is located anterior to the cerebellum. a. Lateral b. Medial c. Third d. Fourth - d. Fourth This region of the brain acts to coordinate multiple sources of sensory information. a. Primary sensory cortex b. Primary motor cortex c. Association area d. Precentral gyrus e. Postcentral gyrus - c. Association area This region of the brain controls decision making skills. a. Frontal lobe b. Cerebellum c. Occipital lobe d. Temporal lobe e. Primary sensory cortex - a. Frontal lobe A patient is having difficulty understanding language but is still able to speak fluently. The patient's dermatomes are intact. Which area of the brain is most likely damaged? a. Broca's area b. Wernicke's area c. Occipital lobe d. Parietal lobe e. Primary sensory cortex - b. Wernicke's area A patient is having difficulty producing speech sounds, but other motor movements are normal. Which area of the brain is most likely damaged? a. Broca's area