Question

name the following :
1)The stimulus received by organism from its external environment

2) the stimulus received by an organism from within its body .

3) the reaction of the body to the stimulus .

4) the membranes covering the brain

5) the fluid protecting embarrassing the brain .



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Answer 1

Answer:

1- Cells called receptors , which detect stimuli (changes in the environment)

2-In physiology, a stimulus is a detectable change in the physical or chemical structure of an organism's internal or external environment. ... Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.

3-Effectors are organs in the body that bring about a response to the stimulus. responses are reflexes.

4-Three layers of membranes known as meninges protect the brain and spinal cord. The delicate inner layer is the pia mater. The middle layer is the arachnoid, a web-like structure filled with fluid that cushions the brain. The tough outer layer is called the dura mater.

5-The brain is housed inside of a bony covering called the cranium. The cranium protects the brain from injury and along with the bones that protect the face are called the skull. Between the skull and brain is the meninges, which consist of three layers of tissue that cover and protect the brain and spinal cord.

Answer 2

Answer:

1) is called external stimulus

2)internal stimulus

3)response

4)meninges

5)cerebrospinal fluid it provides nourishment to brain

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Explanation: