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HBS Unit 2
Terms in this set (31)
the part of the brain continuous with the spinal cord and comprising the medulla oblongata and pons and midbrain and parts of the hypothalamus
Central nervous system
brain and spinal cord, to which sensory impulses are transmitted and from which motor impulses pass out
concerned especially with the coordination of muscles and the maintenance of bodily equilibrium, situated between the brain stem and the back of the cerebrum
composed of right and left hemispheres, of the vertebrate forebrain; the integrating center for memory, learning, emotions
ridge between anatomical grooves
subcortical structures (as the hypothalamus, the hippocampus, and the amygdala) of the brain that are concerned especially with emotion and motivation
division of organ
Peripheral nervous system
is outside the central nervous system and comprises the cranial nerves excepting the optic nerve, the spinal nerves, and the autonomic nervous system.
study of the conformation of the skull based on the belief that it is indicative of mental faculties and character
shallow furrow on the surface of the brain separating adjacent gyri.
(thyroid or the pituitary) that produces an endocrine secretion -- called also ductless gland, gland of internal secretion.
The glands and parts of glands that produce endocrine secretions, help to integrate and control bodily metabolic activity, and include especially the pituitary, thyroid, parathyroid, adrenals, islets of Langerhans, ovaries, and testes.
A gland (as a sweat gland, a salivary gland, or a kidney) that releases a secretion external to or at the surface of an organ by means of a canal or duct
A cell, group of cells, or organ of endothelial origin that selectively removes materials from the blood, concentrates or alters them, and secretes them for further use in the body
protein hormone that is produced especially by the pancreatic islets, promotes an increase in the sugar content of the blood by increasing the rate of breakdown of glycogen in the liver
chemical signals found in all multicellular organisms that are formed in specialized cells, travel in body fluids, and interacting with target cells
hormone that lowers blood glucose levels by promoting the uptake of glucose by most body cells
automatic adjustment of the eye for seeing at different distances
defect of an optical system causing rays from a point to fail to meet in a focal point resulting in a blurred and imperfect image
small circular area in the retina where the optic nerve enters the eye that is devoid of rods and cones
conical photosensitive receptor cells of the vertebrate retina that function in color vision
transparent part of the coat of the eyeball that covers the iris and pupil
ability to judge the distance of objects
vision is better for distant than for near objects -- called also farsightedness
color of eyes
glass,forming an image by focusing rays of light
nearsightedness, can see closer better than far
passing to the eye and spreading over the anterior surface of the retina, and conduct visual stimuli to the brain
deflection from a straight path undergone by a light ray or a wave of energy in passing obliquely from one medium (as air) into another (as water or glass) in which its velocity is different.
lines most of the large posterior chamber of the vertebrate eye, is composed of several layers including one containing the rods and cones, and functions as the immediate instrument of vision by receiving the image formed by the lens
Any of the long rod-shaped photosensitive receptors in the retina responsive to faint light