Coordination and Response Definitions Flashcards
1
Q
Reflex action
A
a means of automatically and rapidly integrating and coordinating stimuli with the responses of effectors(muscles and glands)
2
Q
Synapse
A
a junction between two neurons
3
Q
Hormone
A
a chemical substance, produced by a gland and carried by the blood, which alters the activity of one or more target organs
4
Q
Adrenaline
A
the hormone secreted in ‘fight or flight’ situations
5
Q
Homeostasis
A
the maintenance of a constant internal environment
6
Q
Gravitropism
A
a response in which parts of a plant grow towards or away from gravity
7
Q
Phototropism
A
a response in which parts of a plant grow towards or away from the direction of a light source
8
Q
Sense organs
A
groups of receptor cells responding to different stimuli(light, sound, touch, temperature and chemicals)
