In: Anatomy and Physiology
Can you please answer all questions and please answer as soon as possible THANK YOU
1/ what do you think wernicke’s area of an infant develops prior to Broca’s?
2/ Create a short paragraph using the following terms: fovea, cones, rods, peripheral retina, acuity, center of the visual field?
3/ Why cone receptors are able to send information about different frequencies of light?
4/why do you think it is easier to name a taste in food than a smell in the environment?
1) Wernicke's area is a part of the cerebral cortex, that functions in understanding the speech, it is sensory. and Broca's area is also a part of the cerebral cortex that functions in forming the speech, it is motor in nature. But generally, Wernicke's area develops prior to Broca's as an understanding of the speech is required for forming the speech, then only it can be expressed otherwise if the formation of speech develops prior to the other, then the information processed won't be normal. with a lack of prior development of Wernicke's area, the thoughts and actions can't be expressed correctly.
2) there are mainly two photoreceptor cells in the eye, which can help to produce a visual image. they are - 1) rods - which is having visual pigment called visually purple or rhodopsin and - 2) Cones - which consists of pigment called photopsin. these rod cells are responsible for scotopic or night vision i.e, they are unable to distinguish colors from each other. Cones are responsible for photonic or day vision, hence able to distinguish colors from each other. At about macula of the retina, a tiny spot is present, where both the photoreceptor cells - cones and rods are absent, where no vision is possible. hence it is called blind spot or fovea. through this area the optic nerve makes the connection with the peripheral retina. but the total area where this visual activity can be seen is called the center of the visual field. at the area centralis, the concentration of both the photoreceptor cells is much high, and this is the place where the maximum visual activity is seen. visual acuity refers to clarity and sharpness of vision. if each optic fiber carries a signal from a single photoreceptor cell, the acuity will be higher. cone cells provide better acuity than the rod cells because rod cells feeds signals via bipolar cells to a single ganglion cell. highest acuity is seen in area centralis.