BIOD 152 Exam 3 well done 2024.

What sense does not have specialized sense organs? - answersTouch What senses contain specialized receptor cells via specialized somatic and visceral afferents? - answersA&C (Smell and Equilibrium) The posterior portion of the outer fibrous layer of the eye is called - answersSclera The outer fibrous layer of the eye includes the: - answersSclera and cornea What portion of the eye supplies blood supply to the other layers of the eye? - answersChoroid (the middle layer) True or false: Cones operate best in dim light - answersFalse True or false: The more numerous type of photoreceptors are rods? - answersTrue What is the correct order of how light passes through the eye? - answersCornea, aqueous humor, lens, retina A patient had CVA in the area indicated by the red X in the figure, below. What type of blindness is the patients most likely to incur. Explain - 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 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. A patient is found to have blindness of the right visual field of both eyes. What part of the vision pathway was most likely damaged? Explain your answer. - answersLeft LGN. All the sensory information from the right visual fields travels together after the optic chiasm to the left side of the brain. A patient is found to have blindness in the right eye. What part of the vision pathway was most likely damaged. Explain your response. - answersRight Optic nerve. Information from the right visual field has not yet crosses at the optic chiasm. Both peripheral and nasal fields of the right eye would be missing. T or F. The lateral fibers of the optic nerves cross at the optic chiasm. - answersFalse True or False. All sensory information from the optic nerves cross at the optic chiasm. - answersFalse The ________ is controlled by the trochlear nerve. - answersSuperior Oblique The____ is controlled by the abducens nerve. - answersLateral Rectus Your elderly patient is discussing her vision problems. She describes her vision as cloudy and dark. Her vision has progressively worsened over the last year. What most likely is causing the vision problem? - answersCataracts, due to lens that slowly become hardened over time. Light is not able to be refracted onto the retina. 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 mostly likely causing the vision problem. Explain. - answersAbducens nerve damage. It 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 diplopia. Match the number (1-5) in the figure below with the correct terms (A-H). - answers1. (H)Scala Vestibuli 2. (D) Cochlear Duct 3. (E) Organ of corti. 4. (A) Scala Tympani. 5. (G) Cochlear nerve Which of the following statements is true regarding the external ear? - answersThe auricle funnels sound into the external acoustic meatus. Which of the following statements is false regarding the external ear. - answersThe external acoustic meatus travels through the parietal bone Which of the following statements is true regarding the middle ear? - answersIt is filled with air. Which of the following statements is false regarding the middle ear? - answersThe stapes receives vibrations from the cochlea Which of the following statements is true regarding the inner ear? - answersThe organ of Corti is responsible for the body's auditory sense Which of the following statements is false regarding the inner ear? - answersThere are two semicircular canals which house sensory receptors Place the terms (A-H) in the correct order for the hearing pathway. - answersSound waves are funneled in the (Auditory canal) Vibrations push against the (Tympanic membra) which moves the ossicles. The stapes pushes against the (Cochlear duct) Movement of the (Stereocilia) causes neurons to send impulses through the (Cochlear nerve) to the brain. Place the terms (A-H) in the correct order for the hearing pathway. - answersFunneled vibrations push against the eardrum which moves the (Ossicles). The stapes pushes against the (cochlear duct. Movement of tiny hairs inside the (organ of corti) causes neurons to send impulses through a cranial nerve to the (auditory cortex) , located in the (temporal) lobe Place the terms (A-H) in the correct order for the hearing pathway. - answersFunneled vibrations push against the eardrum which moves the (Auditory cortex). The stapes pushes against the (Organ of Corti). Movement of tiny hairs inside the (Stereocilia) causes neurons to send impulses through a cranial nerve to the (cochlear duct), located in the (ossicles) lobe.