HUMAN BIOLOGY

SenSory SyStemS 275 What is the sense of balance? Balance is the sense of the natural position of the body or its parts. Our ba ...

276 Chapter 14 accommodation Adjustments of the eye’s lens that focus light pre- cisely on the retina. cornea The transparent st ...

SenSory SyStemS 277 hoW do the eyes detect light? In the eye’s outer layer, the curved cornea covers the iris and helps focus i ...

278 Chapter 14 cone cells Photoreceptors that detect bright light. fovea Area near the center of the retina where visual acuity ...

SenSory SyStemS 279 What are the eye’s photoreceptors? Rods and cones in the retina are the eye’s photoreceptors. Rods detect d ...

280 Chapter 14 Disorders of the eye problem. The eyeball is “taller” than it is wide (or the lens is “lazy”), so close images ar ...

SenSory SyStemS 281 or a natural cornea from a donor (a cadaver) is stitched in place. Within a year, the patient is fitted with ...

summary section 14.1 A stimulus is a form of energy that the body detects by means of sensory receptors. A sensation is a consci ...

SenSory SyStemS 283 Name six categories of sensory receptors and the type of stimulus that each type detects. How do somatic se ...

284 Chapter 14 Detecting substances present in the body fluids that bathe them is the function of. a. thermoreceptors c. mechan ...

This chapter expands on what you have learned about the functions of the hypothalamus (13.7). You will see more examples of how ...

What are hormones? Hormones are signaling molecules secreted by endocrine glands, endocrine cells, and some neurons. The bloods ...

Figure 15.1 Animated! This diagram gives an overview of major hormone-secreting organs and their primary endocrine functions. cl ...

nonsteroid hormone Hormone derived from an amine, a peptide, or a protein. second messenger Molecule that relays a hormone signa ...

hoW do hormones interact With target cells? Hormones interact with receptors that span a target cell’s plasma membrane or are i ...

the hypothalamus and pituitary gland n The hypothalamus and pituitary gland interact as a major brain center that controls activ ...

hoW do the hypothalamus and pituitary glands interact in the production and release of hormones? The hypothalamus produces horm ...

What kinds of bodily activities do hormones typically regulate? Hormones generally regulate slower, often long-term changes in ...

hoW does groWth hormone affect bodily groWth? Growth hormone (GH) stimulates the growth of bone and skeletal muscle, among othe ...

the thyroid and parathyroid glands n Hormones from the thyroid gland are required for normal growth and metabolism. The thyro ...