Module_2_Exam__Requires_Respondus LockDown Browser Essential Human Anatomy and Physiology II

on 1 This is the most superficial layer of the brain meninges. dura mater Dura mater (menix) Your Answer: 3 / 3 pts Ques!on 2 The ______ fissure separates the cerebrum from the cerebellum. transverse Transverse Your Answer: 4 / 4 pts Ques!on 3 What is the purpose of the blood-brain barrier? Describe its maintenance from a cellular level. To protect the brain by regula"ng which substances can enter. It provides a stable chemical level for the nervous system. The blood-brain barrier is a diffusion barrier which prevents most par!cles from entering the central nervous system !ssue, keeping the brain and spinal cord separate from general blood circula!on. The blood-brain barrier is formed by the rela!vely 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. 2 / 2 pts Ques!on 4 All the following are func"ons of the hypothalamus except: Maintain homeostasis Controls the pituitary gland Links the nervous and endocrine systems Relays sensory impulses to the cerebrum Correct! 2 / 2 pts Ques!on 5 What is the largest por"on of the brain? Cerebellum Cerebrum Correct! Corpus collosum Cingulate gyrus 2 / 2 pts Ques!on 6 This region of the brain acts to coordinate mul"ple sources of sensory informa"on. Primary sensory cortex Primary motor cortex Associa"on area Correct! Precentral gyrus Postcentral gyrus 2 / 2 pts Ques!on 7 A pa"ent is having difficulty understanding language but is s"ll able to speak fluently. The pa"ent’s dermatomes are intact. Which area of the brain is most likely damaged? Broca’s area Wernicke’s area Correct! Occipital lobe Parietal lobe Primary sensory cortex Your Answer: 2 / 2 pts Ques!on 8 Describe how memories are stored and retrieved in the brain. Include a specific brain region. Memories are stored in mul"ple different areas within the cerebral hemispheres. They are stored and retrieved by the hippocampus. 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 emo!onally charged events result in our most vivid memories. 2 / 2 pts Ques!on 9 Which statement is false concerning the brainstem? The medulla por"on of the brainstem con"nuous with the spinal cord. The medulla contains reflex centers to regulate vasoconstric"on. The midbrain contains the superior and inferior colliculi. The midbrain helps to regulate breathing. Correct! 2 / 2 pts Ques!on 10 Which of the following is true concerning the cerebellum? The gray ma!er is internal while the white mater is external. The cerebellum works to plan body movements by relaying informa"on spinal cord. The anterior lobe receives informa"on from the body trunk. Correct! The vermis coordinates the trunk and shoulder movements. 2 / 2 pts Ques!on 11 Which of the following is most likely a symptom of ALS? Impaired ability to swallow Correct! Decreased sensa"on in the hands Shrinkage of cerebral cortex Increased size of brain ventricles All the above 2 / 2 pts Ques!on 12 Which of the following is true concerning a CVA? An ischemic stroke is also known as a “brain bleed”. A TIA is a form of hemorrhagic stroke. Stroke survivors never regain any lost func"on. A hemorrhagic stroke is due to a broken blood vessel. Correct! 2 / 2 pts Ques!on 13 A pa"ent is unable to extend his fourth and fi%h digits when asked to open his hand. What is most likely the cause? CVA in the frontal lobe Carpal tunnel syndrome Ulnar nerve damage Correct! Anterior spinal cord injury Your Answer: 4 / 10 pts Ques!on 14 Label the following spinal cord regions in the diagram below: 1: _____________________ 3: _____________________ 4: _____________________ 6: _____________________ 11: ____________________ 1. white ma!er (lateral) 3. central canal 4. white ma!er (anterior) 6. anterior horn 11. ventral root 1: Lateral Column 3: Gray Commissure 4: Anterior Column 6: Anterior/Ventral Horn 11: Ventral Root 3 / 3 pts Ques!on 15 What cranial nerve is highlighted in blue (also indicated by the arrow) in the figure below? Op"c Oculomotor Trochlear Abducens Correct! Spinal Accessory 3 / 3 pts Ques!on 16 What type of nerve is the cranial nerve below and what does it control? (Highlighted in blue, also indicated by the arrow)