Portage Learning Anatomy & Physiology 2: Module 3 Exam Questions with Correct Answers

What sense does not have specialized sense organs? A. Smell B. Touch C. Equilibrium D. A&C - ANSWERSB. Touch The posterior portion of the outer fibrous layer of the eye is called the _____. - ANSWERSSclera What portion of the eye supplies blood supply to the other layers of the eye? - ANSWERSChoroid (of the middle layer) True or false: The more numerous type of photoreceptors are rods. - ANSWERSTrue What is the correct order of how light passes through the eye? A. Cornea, Lens, pupil, retina B. Cornea, lens, vitreous fluid, retina C. Lens, retina, cornea, optic nerve D. Lens, vitreous fluid, optic nerve, retina - ANSWERSB. Cornea, lens, vitreous fluid, retina Vitreous fluid fills the space posterior to the lens (Vitreous fluid fills the space posterior to the lens) 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. - ANSWERSBilateral left visual field blindness 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. A patient has a brain tumor 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. - ANSWERSLeft eye blindness Left eye blindness because there is damage to the left optic nerve. Information from the left visual field has not yet crossed at the optic chiasm. Both peripheral and nasal fields of the left eye would be missing. True or False: All sensory information from the optic nerves cross at the optic chiasm. - ANSWERSFalse (only medial fibers cross at optic chiasm) The ________ is controlled by the trochlear nerve. A. Superior rectus B. Medial rectus C. Lateral rectus D. Superior oblique - ANSWERSD. Superior oblique Your elderly patient is discussing her vision problems. She describes her vision as blurry. Following a visual examination, her left eye deviates medially when looking straight ahead. What is most likely causing the vision problem? Explain your reasoning. A. Cataracts B. Abducens nerve damage C. Brain tumor in the occipital lobe D. Medial rectus damageE. Superior rectus damage - ANSWERSB The abducens nerve controls the lateral rectus. Damage to the lateral rectus would cause there to be a muscle imbalance, and the medial rectus would pull the eye medially when looking straight ahead, causing blurry vision. (Diplopia) Match the numbers (1-5) in the figure below with the correct terms (A-H). Note: not all terms will be used. 1- A: Scala Tympani 2- B: Facial Nerve 3- C: Tympanic Membrane 4- D: Cochlear duct 5- E: Organ of Corti - ANSWERSlabel Which of the following statements is false regarding the external ear? A. The lobule does not contain cartilage. B. The auricle funnels sound into the external acoustic meatus. C. The helix contains cartilage. D. The external acoustic meatus travels through the parietal bone. - ANSWERSD. The external acoustic meatus travels through the parietal bone. Which of the following statements is false regarding the middle ear? A. The malleus receives vibrations from the eardrum. B. It is filled with air. C. It contains three small bones. D. The stapes receives vibrations from the cochlea. - ANSWERSD. The stapes receives vibrations from the cochlea. Which of the following statements is true regarding the inner ear? A. The organ of Corti is responsible for the body's auditory sense. B. It is filled with air. C. The cochlea is responsible for the body's vestibular sense. D. There are two semicircular canals which house sensory receptors. - ANSWERSA. The organ of Corti is responsible for the body's auditory sense.