Controlling Processes In The Human Body Flashcards
(21 cards)
Stimulus
An change or signal in the environment
Responds
A reaction to stimuli
Nerve pulses
A message carried by neurons
Neurons
Cells that carry information through the nervous system
Synapse
The gap between two neurons
Reflex
An automatic response that happens with out control
Gland
An organ that releases and produces chemicals into either a duct or the blood stream
Duct
A tiny tube through which chemicals are released from a gland
Hormone
A chemical produced by an Endocrine gland; chemical messenger
Target cells
Cells that are specialized in a way that they can recognize hormones
Negative feedback
A process in which a system is turned off by the condition it produces
Fertilization
The joining of an egg and a sperm cells
Testes
Organs where sperm and testosterone is produced
Testaterone
Controls development of male characteristics
Ovaries
Female reproductive structure that produces eggs
Fallopian tubes
Passageway an egg travels from ovary to uterus
Uterus
A hollow muscular organ
Estrogen
A hormone produced by the ovaries that controls the development of eggs and female characteristics
Menstrual cycle
The monthly cycle of changes that occur in a female
Menstruation
A process in which the thickened lining of the uterus breaks down and blood and tissue and pass out of the female body through the vagina
Ovulation
Where a mature egg is released from the ovary into the Fallopian tube
