31.4 The Senses Answer Key

To master this section, start by categorizing the five main types of sensory receptors: Receptor Type Detect touch, pressure, and sound vibrations Skin, inner ear Chemoreceptors Detect chemical signals (smell and taste) Nose, taste buds Thermoreceptors Detect heat and cold Skin, hypothalamus Photoreceptors Detect light (rods and cones) Eyes (retina) Nociceptors Detect pain Most body tissues (except the brain) 1. Touch, Temperature, and Pain

Unlike other senses, touch is not localized in a single organ but is found throughout the body, primarily in the skin. Key Concept: 31.4 the senses answer key

The skin acts as the largest sense organ and contains receptors that respond to three main types of stimuli: To master this section, start by categorizing the

The ear is unique because it manages two distinct functions: hearing and detecting body position (balance). They are not involved in hearing

Answer: The three semicircular canals (oriented in perpendicular planes) detect rotational motion and balance (equilibrium). They contain fluid and hair cells. When you turn your head, the fluid lags behind, bending the hair cells and sending signals to the brain about the direction and speed of rotation. They are not involved in hearing.

The primary sense organs for taste, located mostly on the tongue. The Five Tastes: Sweet, sour, salty, bitter, and (a savory flavor often associated with MSG and meats). Connection: