Lecture_C - Receptors Reception of sound Sensory receptors...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Receptors Reception of sound Sensory receptors Learning Objectives Hormones and their receptors Reception of light. Rhodopsin wo Meanings of the Term Receptor Physiology: A specialized cell or group of nerve endings that respond to sensory stimuli. Biochemistry: A molecular structure on the surface or interior of a cell that binds with substances such as hormones, neurotransmitters, drugs, or antigens. ensory Receptors Sensory receptors are classified according to the type of energy they can detect and respond to. Mechanoreceptors: hearing, balance, stretching. Photoreceptors: light. Thermoreceptors: changes in temperature. Electroreceptors: specialized sensory organs in certain fish that detect electrical currents in the surrounding environment. Chemoreceptors: smell, taste. ensory Receptor Cells http://www.hhmi.org/senses/ Sensation Receptor Cell Vision Rods, cones Hearing Hair cells Smell Olfactory neurons Taste Taste receptor cells Touch Nerve endings Pain Naked nerve ending Different kinds of receptor cells transform physical stimuli to the nerve impulses. Locations of the Primary Sensory Areas Each of the five senses activates a separate area of the cerebral cortex. Positron Emission Tomography (PET) The PET scan on the left shows two areas of the brain (red and yellow) that become particularly active when volunteers read words on a video screen: the primary visual cortex and an additional part of the visual system, both in the back of the left hemisphere. Other brain regions become especially active when subjects hear words through earphones (the PET scan on the right). earing...
View Full Document

Page1 / 20

Lecture_C - Receptors Reception of sound Sensory receptors...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online