A&P 102 Array - Module 2 test

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Question 1 This layer of the meninges is tightly attached to the brain. Pia mater (menix) Question 2 The _______ fissure separates the right and left cerebral hemispheres. Median longitu... dinal Question 3 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. Question 4 All the following are functions of the hypothalamus except: Maintain homeostasis Controls the pituitary gland Links the nervous and endocrine systems Relays sensory impulses to the cerebrum Question 5 What is the largest portion of the brain? Cerebellum Cerebrum Corpus collosum Cingulate gyrus Question 6 This region of the brain controls decision making skills. Correct! Frontal lobe Cerebellum Occipital lobe Temporal lobe Primary sensory cortex Question 7 A patient is having difficulty producing speech sounds, but other motor movements are normal. Which area of the brain is most likely damaged? Correct! Broca’s area Wernicke’s area Occipital lobe Parietal lobe Primary motor cortex Question 8 What is muscle tone and how is it maintained? Muscle tone is the degree at which muscles remain partially contracted while at rest. Muscle tone is continuously monitored and maintained by the cerebellum to keep bones and joints in place. Question 9 Which statement is false concerning the brainstem? Correct! The midbrain portion of the brainstem is continuous with the spinal cord. The pons helps to regulate breathing. The midbrain contains the superior and inferior colliculi. The medulla contains reflex centers to regulate vasoconstriction. Question 10 Which of the following is false concerning the cerebellum? The gray matter is external while the white mater is internal. The cerebellar peduncles are located posteriorly. The anterior lobe receives information from the body trunk. The vermis coordinates arm movements. [Show More]

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