This process is called: A. mydriasis. B. myopia. C. miosis. D. macula. Answer Key: C Question 4 of 20 1.0 Points The round opening in the iris that allows light rays to enter the internal eye is the: A. retina.
Cow Eye Dissection Introduction: The eye is a special sensory organ with a complex structure and function. The objective was to gain a better understanding of the structure and the function of the eye. In this lab, we set out to dissect a cow's eye and identify the different parts of the eye. We did this by removing the fat and muscle surrounding the eye to reveal the sclera, and be able to make an incision in the middle of the eye to reveal the inner parts of the eye; the vitreous humor, ciliary body, choroid and retina. Once all the parts were identified, we received a clearer understanding of how each part of the eye affected the whole eye.
Neural Regulation of Mechanical Digestion 4. Identify three neural systems that control the mechanical movements in the GI tract. a. CNS b. ANS-Long Reflexes c. ENS-Local Reflexes 5. Describe the role of the CNS with regard to swallowing. What is the stimulus?
Unit 6 Case Study: Zachary’s Story A. An ulcer starts by eroding the mucosa of the GI tract wall. What functions of digestion and/or reabsorption might be lost if this layer is no longer functional? What functions will be compromised if the ulcer eats through the submucosa and then the muscularis? a. Absorption would not happen correctly some of the ingested and secreted may seep out of the lumen.
_____ Maltase is a substrate for maltose. 12. _____ The layer of the esophagus most proximal to the lumen is
Sit the child down and put on a pair of disposable gloves. Gently pull down the lower eyelid and any visible foreign body removed with either a clean wet piece of tissue or a small piece of wet gauze. If this doesn’t work, pull the upper eyelid over the lower lid and try to flush it out with tears. If the foreign body still remains in the eye try to wash the eye with clean water by positioning the child’s head over the sink or bowl with their eye open, facing the bottom of the sink or bowl. Using a plastic cup try to pour water on the eye from the tear duct outwards.
Of the two types of pain, which is transmitted by myelinated nerve fibers? 3. ___ papillae at the rear of the tongue have taste buds sensitive to bitter chemicals. 4. Axons from the olfactory neurons synapse with the next neurons in the ___ of the brain.
Mirrors can reflect images of objects because light rays bounce off an object, travel in a straight line to a mirror, bounce off the mirror, and then travel to the eye of an observer. Refraction, the bending of light rays, occurs when light travels from one transparent substance to another. If you place a large bottle of water in front of a newsprint it makes the letters appear wider and larger, because it bends the light inward, making it appear to the eye that the light rays are coming from much wider print. Convex lenses are used in movie and slide projectors, and in eyeglasses for far-sighted people. A concave lens “caves in’ in the middle, so it is thin in the middle and thick on the outer edges.
The different detected speeds are represented in colour for ease of interpretation, like leaky heart valves: the leak shows up as a flash of unique colour. Receiver and processor These detect and amplify the backscattered energy and manipulate the reflected signals for display Image
Which allows the information from both eyes to be processed together. Optic tract is in fact comprised of two tracts: the left optic tract and the right optic tract. The left optic tract convey information from temporal retinal fibers from the left eye and nasal retinal fiber from the right eye. The right optic tract convey information from the temporal retinal fibers from the right eye and nasal retinal fibers from the left eye. Lateral geniculate nucleus primary is the processing center for the visual information the is received from the retina of the eye.