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BIOD 152 Module 2 Exam 2
Question 1 3 / 3 pts This layer of the meninges is tightly attached to the brain. Pia mater (menix) Question 2 3 / 3 pts The fissure separates the right and left cerebral hemispheres. Median longitudinal Question 3 4 / 4 pts 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. Question 4 2 / 2 pts All the following are functions of the hypothalamus except : Regulates sleep Links the nervous and endocrine systems Correct! Filters out unimportant sensory information Regulates water balance Question 5 2 / 2 pts What is the largest portion of the brain?
Cerebellum Correct!
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 2 / 2 pts Which statement is false concerning the brainstem? The medulla portion of the brainstem continuous with the spinal cord. The medulla contains reflex centers to regulate vasoconstriction. The midbrain contains the superior and inferior colliculi. Correct! The midbrain helps to regulate breathing. Question 10 2 / 2 pts Which of the following is true concerning the cerebellum? The gray matter is internal while the white mater is external. The cerebellum works to plan body movements by relaying information spinal cord. Correct! The anterior lobe receives information from the body trunk. The vermis coordinates the trunk and shoulder movements. Question 11 0 / 2 pts Which of the following is most likely a symptom of ALS? Correct Answer Impaired ability to swallow Decreased sensation in the hands
Shrinkage of cerebral cortex
1: Lateral Column 3: Gray Commissure 4: Anterior Column 6: Anterior/Ventral Horn 11: Ventral Root Question 15 3 / 3 pts What cranial nerve is highlighted in blue (also indicated by the arrow) in the figure below?
Optic Correct! Oculomotor Trochlear Abducens Spinal Accessory Question 16 3 / 3 pts What type of nerve is the cranial nerve below and what does it control? (Highlighted in blue, also indicated by the arrow)
receives sensory information from the upper lip and upper gums is a mixed sensory and motor branch controls the muscles of mastication Question 18 10 / 10 pts Use the figure below to answer the following questions. Answer by writing the letter (A-J) from the figure that corresponds with the correct cranial nerve.
- This cranial nerve receives sensory information for smell.
- This cranial nerve controls the inferior oblique muscle.
- This cranial nerve has three branches.
- This cranial nerve is responsible for taste on the anterior portion of the tongue.
- This cranial nerve is responsible for taste on the posterior portion of the tongue. **1. A. (Olfactory)
- C. (Oculomotor)
- D. (Trigeminal)
- F. (Facial)
- H. (Glossopharyngeal)** Question 19 10 / 10 pts Label the nerves (A-C) in the figure below: A: B: C:
Question 20 2 / 2 pts The lumbar plexus is from spinal nerves: Correct! T12-L L04- S C01-C L01-S Question 21 2 / 2 pts A patient is on a ventilator post a car accident. What region of the spine is most likely damaged? L01-L S01-S T01-T Correct! C03-C Question 22 2 / 2 pts A patient is not able to extend his left wrist or fingers. What nerve is most likely damaged? Ulnar Axillary Correct! Radial
Median
Ciliary ganglion Question 26 3 / 3 pts Which of the following is false concerning the sympathetic nervous system? It is also called the thoracolumbar division. Correct! It is also called the craniosacral division. The primary neurotransmitter is norepinephrine. It inhibits the digestive tract. Question 27 4 / 4 pts A patient comes into the ER following an accident. She is scared and starting to hyperventilate. You talk with her in a calm, reassuring manner as she receives medical care. You are trying to increase the activity in which division of her nervous system? Explain your answer. You are trying to increase the activity of the parasympathetic nervous system as it is also sometimes called the “housekeeper system” because it promotes all the internal responses we associate with a relaxed state. The parasympathetic system also acts to slow the heart rate. Question 28 5 / 5 pts If someone sustains an injury to the area of the spinal cord, as shown below by the blue oval, would you be more likely to see paralysis or decreased sensation? Explain your answer.
You would be more likely to see paralysis (muscular weakness) because motor neurons exit the spinal cord anteriorly. Question 29 5 / 5 pts One of your patients sustained a hemorrhagic CVA. You notice they have rigid movements when moving their arms. They also have difficulty forming a plan to move their body. What area of the brain is most likely impacted? Explain your reasoning. The basal ganglia is responsible for executing a motor plan and to slow and control fine movements (creating the rigid movements). Apraxia, or impaired motor planning. Apraxia results in rigid movements and difficulty executing a motor plan.
