BIO 152 / BIOD 152 AP 2 FINAL Exam Questions and Answers | Latest Update 2023/2024 (GRADED)

Name and describe what is occurring in the neuron cell membrane in section 2 of the diagram. Include the charge of the membrane during this phase. BIO 152 / BIOD 152 AP 2, FINAL Question 3 Not yet graded / 4 pts ● Depolarization: The sodium gates open and sodium rushes into the axon during the depolarization phase of the action potential. ● Voltage travels past zero and then on up to +40 mV. Where is the integration center of a reflex located? CNS (central nervous system) BIO 152 / BIOD 152 AP 2, FINAL Question 5 Not yet graded / 10 pts What is false about the flexor withdrawal reflex? A. It does not involve interneurons. B. It involves excitatory interneurons. C. It involves inhibitory interneurons. D. The effect of the reflex is to create a co-contraction of two muscles Correct! E. A&D F. B&C Label the nerves (A-C) in the figure below: Question 4 4 / 4 pts BIO 152 / BIOD 152 AP 2, FINAL A: B: C: BIO 152 / BIOD 152 AP 2, FINAL A- Lateral femoral cutaneous B- Femoral nerve C- Saphenous BIO 152 / BIOD 152 AP 2, FINAL Question 7 Not yet graded / 4 pts Which of the following is most likely a symptom of ALS? Correct! Impaired ability to swallow Decreased sensation in the hands Shrinkage of cerebral cortex Increased size of brain ventricles All the above What is the purpose of the blood-brain barrier? Describe its maintenance from a cellular level. Question 6 2 / 2 pts BIO 152 / BIOD 152 AP 2, FINAL Question 8 2 / 2 pts Question 9 Not yet graded / 2 pts 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. A patient damaged the radial nerve. What action is most likely limited? Elbow flexion Hip extension Wrist flexion Correct! Wrist extension BIO 152 / BIOD 152 AP 2, FINAL Question 10 Not yet graded / 5 pts Describe how memories are stored and retrieved in the brain. Include a specific brain region. Memories are not stored in one specific area within the brain but instead are stored throughout the cerebral hemispheres. The hippocampus acts as a memory center to help with memory storage and retrieval. The involvement of the limbic system explains why emotionally charged events result in our most vivid memories. A patient had a CVA in the area indicated by the red x in the figure, below. What type of blindness is the patient most likely to incur? Explain your reasoning. A. Left eye blindness B. Right eye blindness C. Bilateral left visual field blindness BIO 152 / BIOD 152 AP 2, FINAL D. Bilateral right visual field blindness. C The right optic tract is damaged. All the sensory information from the left visual fields travels together after the optic chiasm to the right side of the brain. BIO 152 / BIOD 152 AP 2, FINAL Match the numbers (1-5) in the figure below with the correct terms (A-H). Note: not all terms will be used.