AP Bio Quick Review

16 terms by ajscienceteach 

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axial skeleton

the part of the skeleton that includes the skull and spinal column and sternum and ribs

appendicular skeleton

forms the extremities and is composed of the shoulder girdle, arm bones, pelvic girdle, and leg bones

osteocytes

mature bone cells

bone marrow

a soft tissue inside the bone that produces blood cells

skeletal muscle

a muscle that is connected at either or both ends to a bone and so move parts of the skeleton

cardiac muscle

the muscle tissue of the heart

smooth muscle

a muscle that contracts without conscious control and found in walls of internal organs such as stomach and intestine and bladder and blood vessels (excluding the heart)

artery

a blood vessel that carries blood away from the heart

vein

a blood vessel that carries blood back to the heart

erythrocytes

also known as red blood cells (RBC) are mature red blood cells produced by the red bone marrow. The primary role of these cells is to transport oxygen to the tissues. The oxygen is transported by the heomglobin.

leukocytes

white blood cells, or WBC, form in the bone marrow and are part of the body's nonspecific defenses and the immune system

platelets

tiny, disk-shaped bodies in the blood, important in blood clot formation

plasma

colorless watery fluid of blood and lymph containing no cells and in which erythrocytes and leukocytes and platelets are suspended

lymphocytes

the two types of white blood cells that are part of the body's immune system: B lymphocytes form in the bone marrow and release antibodies that fight bacterial infections; T lymphocytes form in the thymus and other lymphatic tissue and attack cancer cells, viruses, and foreign substances.

lymph nodes

Bean-shaped filters that cluster along the lymphatic vessels of the body. They function as a cleanser of lymph as wells as a site of T and B cell activation

thymus

a ductless glandular organ at the base of the neck that produces lymphocytes and aids in producing immunity

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