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4.3 Animal Science Vocabulary A

Across
The most important and central part of the circulatory system; The organ of the body that circulates blood through rhythmical contractions from electrical impulses.
A nerve cell.
One of two spongy, saclike respiratory organs in vertebrates found int he chest cavity that remove CO2 from the blood and fill it with O2.
The circulatory system excluding the pulmonary circulation.
The upper portion of the trachea (airway).
Pressure of blood against the inner walls of the blood vessels, varying in different parts of the body during different phases of contraction of the heart and under different conditions of health and exertion.
An end organ or group of end organs for neurons; specialized to be sensitive to stimulating agents.
A blood vessel that caries blood away from the heart.
Part of the autonomic system that slows the body from the flight-or-fight mode, lowering heart rate and blood pressure.
The circulation of blood from the heart to the lungs for oxygenation and back to the heart.
A bundle of fibers forming a communication/feedback system for impulses of sensation, motion, and more between the brain, spinal cord, and other body parts.
An instrument used to measure blood pressure.
Down
Any gland of the body that secretes a substance or hormone, thereby controlling certain bodily processes.
The expansion and contraction of an artery associated with each heartbeat.
The science that deals with the function of a plant or animal's body and its organs, systems, tissues, and cells.
One of the upper chambers of the heart.
System pertaining to the kidneys and filtration.
One of the subdivisions of the lungs; smaller than bronchial tubes, bigger than alveoli.
Operates the voluntary motor activity of the body.
The oxidation of organic compounds that occurs within cells, producing energy for cellular processes.
The brain and spinal cord in vertebrate, which receive sensory impulses and from which motor impulses issue.
The part of the autonomic system that stimulates organs for flight or fight.
The tendency of a system to maintain internal stability.
Small endocrine glands located in the lower part of the brain that secretes hormones into the bloodstream to influence growth and stimulate organs and glands.
Extremely narrow, microscopic blood vessel. The presence of blood in capillaries produces the pink color of skin.
The number of times an organism breathes in a minute.
The filtering and excretory unit of the kidney, consisting of the glomerulus and tubules.
An important pressure equalizer for the body.;The layer or sheet of muscle and connective tissue that forms the wall between the thoracic and abdominal cavities of mammals and aids in the process of breathing.
The process that allows molecules to move across a membrane in an effort to equal concentration.
One of a pair of organs in the back of the abdominal cavity that form and excrete urine, regulate fluid and electrolytes, and act as endocrine glands.