fluid mixture of sperm and supporting materials

membrane that allows only certain solutes to pass through

one of three half-circular, fluid-filled tubes in the vestibular labyrinth that monitors angular acceleration and deceleration

membranous flap of connective tissue between the aorta and a ventricle of the heart (the aortic or pulmonary semilunar valves)

secretory accessory gland in males; contributes to semen

site of sperm production in testes

process that describes aging in plant tissues

specialized neuron or other cells associated with a neuron that is modified to receive specific sensory input

conversion of a sensory stimulus into electrical energy in the nervous system by a change in the membrane potential

system of sensory and motor nerves

modified leaf that encloses the bud; outermost structure of a flower

cell wall division between hyphae

cell wall division between hyphae

mapping information obtained after DNA sequencing

strain of bacterium that carries a set of similar antigens on its cell surface, often many in a bacterial species