Brain_Special_Senses_LR

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1409

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Biology

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Dec 6, 2023

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BioLab 3 Brain and Senses Lab Report , , 1409 and required for password: The lab report is unique each semester and checks have been put into place to ensure students are doing their own work. Copying from other students or from outside sources will result in a zero on the accompanying lab quiz. I. Central Nervous System 1. Describe the location and function of the hypothalamus. a. Below the thalamus. Regulates homeostasis and also helps regulate basic functions like thirst, hunger and water balance. 2. Which lobe of the brain is involved with visual association? a. Occipital lobe 3. Refer to Lab, Exercise 1, Step 1. What is the name and function of the structure labeled J? a. Parietal lobe. It includes the primary sensory are that receive sensory impulses for temperature, pressure and pain 4. Refer to Lab, Exercise 1, Step 1. What is the name and function of the structure labeled O? a. CerebellumIt coordinates movements, maintain posture and provides knowledge of body position 5. List three structures included in the hindbrain. a. Pons b. Cerebellum c. Medulla oblongata II. Special Senses 1. What structure of the eye contains the cones? a. The retina 2. What is the function of the optic nerve? a. Sends visual information to the brain. © 2022 Access Learning Systems C-FA23 1
3. Follow the instructions to complete the visual tests in Exercises 2 and 3 to determine your blind spot and near point. Record the distance of your blind spot in each eye in the table below. Eye Distance (cm) Right 38 Left 36.5 Record the distance of your near point in each eye. Eye Distance (cm) Right 10.5 Left 12.5 4. Refer to Lab, Exercise 10. Was the subject in the video able to hear the sound equally in both ears? a. Yes. The subject in the video was able to hear the sound equally in both ears 5. What is the function of the cochlea of the ear? a. The cochlear contains sensory receptors for hearing 6. Compare myopia with hyperopia. a. Myopia occurs when a distant object is brought into focus in front of the retina while hyperopia is when an image is brought into focus behind the retina 7. What causes cataracts? a. Cataracts can develop due to various reasons including age, medical conditions. Such as diabetes mellitus, genetic conditions of carbohydrate metabolism, trauma, etc 8. What is the name of the organ of smell? a. The olfactory epithelium 9. Refer to Lab, Exercise 12. Were you able to hear all 3 frequencies? If not, which one? a. yes 10. What is the benefit of binocular vision? a. Each eye has a different field of view, which, when combined, expands our peripheral vision and enhances our awareness of the surrounding environment Summary Questions 1. Describe the four lobes of the brain and what each one controls. © 2022 Access Learning Systems C-FA23 2
a. Parietal lobe :It forms the central and superior portion of the cerebrum and itincludes the primary sensory are that receive sensory impulses for temperature,pressure and pain. b. Temporal lobe :Forms the inferolateral portion of the cerebrum and it is involved incomplex memories, speech, hearing and interpretation c. Occipital lobe :It forms the posterior portion of the cerebrum and it's involved withvisual association d. Frontal lobe :It forms the anterior portion of the cerebrum and it includes theprimary motor area that controls voluntary movement and areas of higher intellectualreasoning. 2. How can nearsightedness be corrected? a. Concave lens can be used to correct myopia 3. What is the difference between static and dynamic equilibrium? a. Dynamic equilibrium is perceived by the sensory receptors within the three semicircular canals and is stimulated by angular movements b. static equilibrium is monitored by the receptors in the vestibule that reports the position of the head in relation to gravity when the body is not moving, and also in linear accelerations 4. Name the darkly pigmented nutritive layer of the eye. a. The choroid 5. What part of the brain is responsible for respiration and circulation? a. The components of the brainstem such as the medulla oblongata 6. Describe the type of receptor that aids in color detection. a. Cones are the type of receptor that help detect color. These three types of specialized photoreceptor cells have pigments within that react to various light wavelengths. Three different types absorb different wavelengths: red, green, and blue. 7. What happens to the near point as a person gets older? a. The distance of the near point increases. This is because as a person grows older, the lens reduces its elasticity and the degree of accommodation is reduced 8. Name the three ossicles of the middle ear. a. Malleus b. Incus c. stapes 9. As a child is learning to talk, they are developing what lobe of the brain? a. Temporal lobe 10. How can you determine if you have astigmatism? © 2022 Access Learning Systems C-FA23 3
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a. An eye exam b. Refraction test © 2022 Access Learning Systems C-FA23 4