C-D

microscopic canals in ossified bone

small vessels that connect smaller arteries, called arterioles, to smaller veins, called venules, and carry out gas exchange

sugars and starches, which body breaks down into glucose

system comprised of the heart and blood vessels

primary structural protein of connective tissue

a substance that increases the rate of a chemical reaction without undergoing permanent chemical change

positively charged ion

type of adaptive immunity in which T-lymphocytes attack parasitic worms, cancer cells, transplanted tissues, or cells that contain pathogens

the basic structural unit of an organism from which living things are created

processes that include growth, metabolism, replication, protein synthesis, and movement

accessory structures that produce ear wax. found only in dermis of the ear canal

passage that forms lower part of uterus

one of the two duplicates of a chromosome formed during the cell cycle

structure made of protein and one molecule of DNA

semifluid mass of partly digested food that moves from the stomach to small intestines

triples of nucleotides that code for amino acids

tough, flexible connective tissue found in parts of the body such as the ear

microorganisms that live in or on the human body without causing it harm

bone containing densely packed osteons that make up the peripheral layer of bone

molecule of RNA (strand of dna) synthesized from a face complementary template strand

a substance made of two or more elements

process leading to shortening and/or development of tension in a muscle

decrease in the diameter of blood vessels in the dermis that reduces blood flow though the skin

increase in diameter of blood vessels in the dermis that allows more blood flow near the surface of skin to release heat