E Flashcards
(126 cards)
EC Coupling
Excitation contraction coupling refers to the steps between depolarization of the muscle cell membrane (excitation) and the activation of that muscle (contraction).
Eccrine Gland
A type of exocrine gland characterized by a long coiled duct that delivers secretions from the secretory region to the surface.
Ecdysis
The periodic shedding of the exoskeleton of invertebrates (molting).
Ecdysone
One of the ecdysteroid hormones of arthropods that is responsible for controlling
many aspects of development, including ecdysis.
Ecdysteroids
The general name for ecdysone and its active metabolites, such as 20-hydroecdysone.
Echolocation
Dectecting objects based on the reflection of sound waves; used by organisms such as whales and bats.
Eclosion
The process whereby an adult insect emerges from its cocoon.
Ectoderm
The outermost of the primary germ layers in a developing embryo that eventually gives rise to tissue such as the nervous system.
Ectopic Pacemaker
A pacemaker in an abnormal location.
Ectotherm
see also endotherm
An animal with body temperature determined primarily by external factors, including but not limited to ambient temperature.
Edema
Excess accumulation of fluid in a tissue.
Effective Refractory Period
The time period in which an excitable tissue cannot be stimulated due to changes in the membrane potential.
Effector
An organ or cell such as a muscle that responds to stimulation from the nervous system.
Efferent
Leading away from a structure;
e.g.,
efferent neurons carry signals from the central nervous system to the periphery;
efferent arterioles carry blood away from the glomerulus of the kidney.
Efferent Arteriole
The arteriole that emerges from the glomerulus of the kidney tubule.
Efferent Division
The part of the peripheral nervous system that consists of efferent neurons.
Efferent Neuron
A neuron that conducts impulses from an integrating center to an effector.
Efflux
Movement of a substance outward, usually in the context of movement out of a cell or tissue.
Egestion
Expulsion of undigested food (feces) from the digestive tract.
Eicosanoids
A type of short-lived chemical signaling molecule.
Elasmobranch Fish
One of two groups of cartilaginous fish, including skates, rays, and sharks. The other group of cartilaginous fish is holocephalans (ratfish).
Elastance
A measure of how readily a structure returns to its original shape after having been stretched.
Elastic Recoil
Movement as a result of the release of elastic storage energy
Elastic Storage Energy
Energy stored within a deformed object, which is released when the object regains its relaxed configuration.