GENERAL HISTOLOGY

EXCRETORY SYSTEM

KIDNEY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is the correct definition of stimulus?
A
The ability of an organism to respond
B
the extent of changes in the surrounding
C
a change in the environment
D
changes in pH
Explanation: 

Detailed explanation-1: -A stimulus is anything that can trigger a physical or behavioral change. The plural of stimulus is stimuli.

Detailed explanation-2: -Environmental stimuli are things that happen in the environment that elicit a response or reaction from a person. For example, a drop in temperature may prompt some people to put on a coat or sweater. A loud thunder boom might elicit a startled jump.

Detailed explanation-3: -What is a stimulus? In biology, we can define stimulus as the “detectable change (physical or chemical) in the environment of an organism that results in some functional activity”.

Detailed explanation-4: -A major role of sensory receptors is to help us learn about the environment around us, or about the state of our internal environment. Different types of stimuli from varying sources are received and changed into the electrochemical signals of the nervous system. This process is called sensory transduction.

There is 1 question to complete.