ESSENTIAL HUMAN ANATOMY & PHYSIOLOGY MODULE 2 QUESTIONS & ANSWERS

ESSENTIAL HUMAN ANATOMY & PHYSIOLOGY MODULE 2 QUESTIONS & ANSWERS 100% GUARANTEED LATEST UPDATE Pia mater (menix) This layer of the meninges is tightly attached to the brain. Your Answer: Pia Mater Question 1 3 / 3 pts Median longitudinal The fissure separates the right and left cerebral hemispheres. Your Answer: Median Longitudinal Question 2 3 / 3 pts Score for this quiz: 100 out of 100 All the following are functions of the hypothalamus except: Maintain homeostasis Controls the pituitary gland Question 4 2 / 2 pts Question 3 4 / 4 pts What is the purpose of the blood-brain barrier? Describe its maintenance from a cellular level. Your Answer: The blood-brain-barrier is a diffusion barrier that prevents most particules from entering the central nervous system tissue and separating the brain and spinal cord from general blood circulation. It is formed relatively from the impameable brain capillaries due to the glial cell astrocytes. It is important for it to be maintained in order to stabilize the chemical environment of the nervous system because if there is an internal variation in the chemical environment the neutrons will fire uncontrollably 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. Correct! Fourth Third Medial Lateral This ventricle is located anterior to the cerebellum. Question 5 2 / 2 pts Correct! Primary sensory cortex Temporal lobe Occipital lobe Cerebellum Frontal lobe This region of the brain controls decision making skills. Question 6 2 / 2 pts Links the nervous and endocrine systems Correct! Relays sensory impulses to the cerebrum Describe how memories are stored and retrieved in the brain. Include a specific brain region. Your Answer: Memories are not stored in one specific area of the brain but they are stored in all the areas of the cerebral hemispheres. The hippocampus helps to retrieve and store our memories. The limbic system is also associated with this process which results in sensory stimulis that awaken our complex memories making them vivid. Question 8 2 / 2 pts Correct! Primary sensory cortex Parietal lobe Occipital lobe Wernicke’s area Broca’s area 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? Question 7 2 / 2 pts Correct! The medulla contains reflex centers to regulate vasoconstriction. The midbrain contains the superior and inferior colliculi. The pons helps to regulate breathing. The midbrain portion of the brainstem is continuous with the spinal cord. Which statement is false concerning the brainstem? Question 9 2 / 2 pts Which of the following is true concerning the cerebellum? Question 10 2 / 2 pts 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. Correct! All the above Hippocampus Parietal lobe Frontal lobe Occipital lobe Alzheimer’s disease impacts which region(s) of the brain? Question 11 2 / 2 pts Which of the following is true concerning a CVA? Question 12 2 / 2 pts 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. Correct! Anterior spinal cord injury Ulnar nerve damage Carpal tunnel syndrome CVA in the frontal lobe A patient is unable to extend his fourth and fifth digits when asked to open his hand. What is most likely the cause? Question 13 2 / 2 pts Label the following spinal cord regions in the diagram below: 1: 5: Question 14 10 / 10 pts An ischemic stroke is also known as a “brain bleed”. A TIA is a form of hemorrhagic stroke. Stroke survivors never regain any lost function. Correct! A hemorrhagic stroke is due to a broken blood vessel. 6: 9: 11: Your Answer: 1 - Posterior Column 5 - Anterior Median Fissure 6 - Posterior Horn 9 - Dorsal Root 11 - DRG (Dorsal root ganglion) 1: Posterior (Dorsal) column 5: Anterior median fissure 6: Posterior (Dorsal) horn 9: Dorsal root 11: DRG (Dorsal Root ganglion) Question 16 3 / 3 pts What cranial nerve is highlighted in blue (also indicated by the arrow) in the figure below? Optic Oculomotor Trochlear Correct! Abducens Spinal Accessory Question 15 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) Mixed: Sensation of digestive tract and Regulation of heart rate Motor: Tongue movement Sensory: Hearing/balance Correct! Mixed: Facial muscles and Taste The maxillary branch of the trigeminal nerve: Question 17 4 / 4 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. Question 18 10 / 10 pts receives sensory information from the eyebrows Correct! receives sensory information from the upper lip and upper gums is a mixed sensory and motor branch controls the muscles of mastication 1. This cranial nerve receives information from the retina. 2. This cranial nerve is responsible for the sensation of the digestive tract. 3. This cranial nerve controls movement of the eye laterally. 4. This cranial nerve receives sensory information for hearing. 5. This cranial nerve is responsible for voluntarily moving the tongue. Your Answer: 1. B 2. I Label the nerves (A-C) in the figure below: A: B: C: Question 19 10 / 10 pts 3. E 4. G 5. J 1. B. (Optic) 2. I. (Vagus) 3. E. (Abducens) 4. G. (Vestibulocochlear) 5. J. (Hypoglossal)