1.1 Flashcards
1
Q
Any change in the internal or external environment is called a …
A
stimulus
2
Q
Receptors detect …
A
stimuli
3
Q
Some receptors are cells, some are proteins on cell surface …
A
membranes
4
Q
To produce a response, … need to communicate with effectors and effectors may need to communicate with other cells.
A
effectors
5
Q
Cells in the nervous system communicate by secreting chemicals called …, which send signals to adjacent cells, such as other nerve cells or muscle cells.
A
neurotransmitters
6
Q
The hormonal system works by cells releasing chemicals called …, which travel in the blood and act as signals to distant cells.
A
hormones
