Close vision

In this chapter, students will be able to understand: Describe the events involved in the stimulation of photoreceptors by light, and compare and contrast the roles of rods and cones in vision; compare and contrast light and dark adaptation; trace the visual pathway to the visual cortex, and briefly describe the steps in visual processing.

42p tangtuy07 02-04-2016 36 2   Download

Chapter 15 (part a) provides knowledge of the eye and vision. In this chapter, you will learn to: Describe the structure and function of accessory eye structures, eye layers, the lens, and humors of the eye; outline the causes and consequences of cataracts and glaucoma; trace the pathway of light through the eye to the retina, and explain how light is focused for distant and close vision; outline the causes and consequences of astigmatism, myopia, hyperopia, and presbyopia.

39p tangtuy07 02-04-2016 41 1   Download

Lion (feline) characteristics: Elongated skull. Proportion of skull varies—large in lion, jaguar, and tiger, small in cheetah and mountain lion. Large canines, small incisors. Cheek teeth with sharp edges for shearing. Large temporalis and masseter muscles of skull to powerfully close jaw. Eyes shifted slightly forward for binocular vision. Constricted pupil is round in large cats, vertical in domestic cats (pupil is horizontal in sheep and goats). Top edge of scapula usually higher than tips of thoracic vertebrae.

6p audi123 31-07-2010 84 13   Download