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located at the base of the esophagus and functions to prevent food materials from entering the esophagus from the stomach
The section of the intestine that is between the stomach and large intestine; site of most absorption of nutrients
primarily involved in water absorption and feces formation; the part of the large intestine between the cecum and the rectum
the terminal portion of the large intestine where the feces are stored until they are eliminated
A muscular opening at the end of the rectum through which waste material is eliminated from the body
one of two glands located on each side of the pelvic cavity that produce ova and female sex hormones
that part of the central nervous system that includes all the higher nervous centers, in the skull
gland that secretes pancreatic juice into the duodenum, where it mixes with bile to digest food
The largest artery in the body; it conducts freshly oxygenated blood from the heart to the tissues.
either of two large veins that return oxygen-depleted blood to the right atrium of the heart
one of two arteries (branches of the pulmonary trunk) that carry venous blood from the heart to the lungs
any of four veins that carry arterial blood from the lungs to the left atrium of the heart
membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi
two spungy organs in the thoracic cavity enclosed by the diaphragm and rib cage; responsible for respiration
voice box; passageway for air moving from pharynx to trachea; contains vocal cords; at top of trachea
either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladder
duct through which urine is discharged in most mammals and which serves as the male genital duct
the external pouch(sac of skin) that contains the testicles,just under the penis. regulates temp
a ductless glandular organ at the base of the neck that produces lymphocytes and aids in producing immunity
in the human female reproductive system, a canal that leads from the uterus to the outside of the body
the tissue and muscle that surrounds the lens of the eye., smooth muscle portion of the ciliary body, which contracts to assist in near-vision capability
the light-sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin the processing of visual information
a ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening
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