Senses Pre-Lab Report

a. Which presynaptic cell must have action potentials to produce one or more action potentials in the postsynaptic cell?

The stimuli will cause a specific reaction within the body depending on the signals – these allow the body to perform its functions smoothly and aid in quick reflexes. Different nerves and cells implement their own distinct actions, each which serve their own purpose in the total body operation.

What components of the nervous system are involved in physical sensation? How does sensory impulse move throughout the body?

* Sensory neurons or Bipolar neurons carry messages from the body's sense receptors (eyes, ears, etc.) to the CNS. These neurons have two processes. Sensory neuron account for 0.9% of all neurons. (Examples are retinal cells, olfactory epithelium cells.)

The first step in determining whether or not an individual was a taster or non-taster of phenylthiocarbamide (PTC) was to obtain a sample of their DNA. Salt water was flushed in cheeks vigorously for 90 seconds and then the salt water was emptied back onto the 15-ml tube. The tube was centrifuged for 2 minutes to produce a pellet at the bottom of the tube. Then, the liquid was drained off of the top of the contents in the tube to leave only the pellet. Next, 15ml of Chelex was added to the tube containing the pellet.

24.Which of the following are common means by which binding of an intercellular chemical messenger with a cell’s receptor brings about an intracellular response?

Receptor - is a body structure that monitors changes in a controlled condition and sends input in the form of nerve impulses to the control center Control

A three-neuron reflex arc consists of a receptor, a sensory (afferent) neuron, and a motor (efferent) neuron. The reflex arc is designed to help keep the body safe, and is the mechanism that permits immediate responses to danger related stimuli. A conduction pathway of a reflex arc consists of the motor neuron innervation of the peripheral nervous system, and at least one association neuron from the central nervous system. After the conduction pathway, an impulse follows. The reflex arc is composed of a sensory receptor, sensory nerve, integrating center, motor nerve, and effector organ.

The eye is made up of many components, including the cornea, pupil, iris, and retina, along with others. Within the retina are rods, cones, and a fovea. Rods are responsible for the black, white, and gray colors we see, along with our peripheral vision. Our cones help us see detail, along with allowing us to see colors, specifically red, green, and

In Edgar Allen Poe’s story The Cask of Amontillado, he uses descriptive details to create an eerie, spooky, and Suspenseful mood. Though the carnival is going on down bellow Fortunato are Montrasour are traveling down into Montresor's family catacombs to retrieve a cask of amontillado. Little dose Fortunato know that he is being lead into a trap and his pride will seal his fate. Poe uses sensory details to make the mood even more eerie and spooky. Poe uses sensory details to make the mood even more eerie and spooky one example of sensory details is “Came from out the nitch a low laugh that erected the hairs upon my head.”

The physiological function of each receptor subtype has not been established and is currently the subject of intensive investigation (1).

The type of sensory neuron that would like respond to a green light would be photoreceptors.

Welty's use of sensory education portrays a nostalgic memory; her definition of sensory education includes her family's seemingly endless "library". As a child, Welty loved reading; her parents read to her until she became literate enough to read on her own. Welty believes books can transport the reader to different worlds and bring the author's and reader's imagination to life; thus creating Welty's vision of sensory education. Reading uses all of the senses; a reader must visualize the world the author sets her/him in.¬¬¬¬ When a reader immerses himself/herself in a great novel, he/she is captured in a whole other universe created by the author; the reader pictures the sounds of a wolf’s cry, smells the baker’s fresh, warm bread, tastes the

This lab involves the examination of cutaneous receptors. There are four exercises. For this lab, report your observations in a formal report, according to the formatting prescribed in Lab Report Format.doc which is found on Blackboard under Assignments/Before You Begin.