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sensory organ that can distinguish pitch and loudness of vibrations in the air around us


specialized hairs that are used for feeling around in the dark


allows air to flow into body, and is an opening in nose, sense of smell


external opening of the rectum, part of excretory system, controls the expulsion of feces and waste


flexible appendage that functions as way to balance and as a heat loss organ


used to fend off prey to protect themselves and to get food and compete with other rats


part of digestive system, chew up food, gnawing ability in rats


male reproductive gland that produce and store sperm


Three difference types of muscle (smooth, skeletal, cardiac), voluntary movements, involuntary movements, and in the heart


support the body, protects internal organs, movement, mineral reserves, blood formation


connect muscles to bones and are a form of connective tissue


connect bone to hold the bones together


covers the abdominal organs, membrane that forms the lining of the abdominal cavity


membrane that surrounds and supports the digestive system


blood vessels that are a part of circulatory system


saturated and unsaturated fats, stored energy for organism


produces bile that dissolves and disperses fat, allowing enzymes to reach the fat


store red and white blood cells, part of the lymphatic system

Diaphragm muscle

large flat muscle that allows for breathing by contracting and expanding and changing the volume of the chest cavity


continues mechanical digestion of food with contractions of smooth muscle, contains mucus, hydrochloric aced and enzyme pepsin


muscle in stomach that connects to the duodenum


food tube tat leads to the stomach where bolus passes through, moves through peristalsis

Pyloric sphincter

a muscular valve that lets food pass from the stomach to the duodenum

Small intestine

adapted to absorb nutrients with projections called villi


first section of small intestine where the stomach joins the small intestine

Large intestine

removes water from undigested materials called feces


controls blood sugar levels with hormone commands to the leaver


excrete waste, filter blood, and regulate the pH levels of the blood, remove urine and water from body

Abdominal Aorta

is a portion of the descending aorta that carries oxygenated blood to bottom part of the body

Inferior Vena Cava

takes deoxygenated blood from the bottom of body and brings it to heart

Adrenal glands

release many hormones

Urinary bladder

saclike organ where urine is stored before it is excreted


tube that leaves kidney and carries urine to urinary bladder


tube where urine exits the body, as well as sperm


produce egg cells in females


passageway from ovary to outside of the body


sex organ that connects the vagina to the urogenital opening, where fetus develops


tract that leads from uterus to outside of the body


skin and muscle that contain the testes


stores sperm and leads to vas deferens

Vas deferens

tube that attaches to the urethra and carries sperm from epididymis


carries sperm out of the body through the penis


male reproductive organ that releases sperm and urine


release alkaline fluid that constitutes much of the volume of semen


barrier of an organ, lubricated surface, allow two sets of organs to move vigorously without wearing each other away


protective sac of tissue that covers the heart


where blood picks up oxygen and gets rid of carbon dioxide


a division of a bodily organ

Right Atrium

receives blood from the superior and inferior vena cavas

Left atrium

receives freshly oxygenated blood from the lungs via the pulmonary vien

Left ventricle

sends oxygenated blood out the descending and ascending aortas to the body

Vena Cavas

veins that take the deoxygenated blood towards the heart and bring to right atrium

Pulmonary Vein

takes oxygenated blood from the lungs to the heart (left atrium)

Ascending and Descending Aorta

carries oxygenated blood from heart to the rest of the body

Coronary arteries

blood vessels across the heart that branch off the aorta and feed the heart muscle

Thymus gland

helps the immune system develop and recognize what is an enemy and what is not


wind pipe that transports air


leads to one of the lungs, subdivide into bronchioles, then subdivide until the reach the tiny air sacs called alveoli

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