Nervous System

Nervous System

OBJECTIVE:

The learners should be able to describe how the nervous system coordinates and regulates these feedback mechanisms to maintain homeostasis. (S10LTIIIc-36)

REVIEW:

It is a fluid tissue where blood cells and platelets are suspended.

ANSWER:

BLOOD

REVIEW:

Three types of blood cells?

REVIEW:

It is a muscular organ that rhythmically contracts to force blood around the body?

ANSWER:

HEART

ANY QUESTIONS? CLARIFICATIONS?

• If none, let's proceed to the next topic...

ODD ONE OUT

• Which do you think does not belong to the group?

• How do you say so?

ODD ONE OUT

• Which do you think does not belong to the group?

• How do you say so?

ODD ONE OUT

• Which do you think does not belong to the group?

• How do you say so?

ACTIVITY

Prepare a 12-inch ruler and a chart. You need to measure the length of time of response to catch a dropped object and see how well their nervous system respond to such stimuli.

QUESTIONS:

1. With which hand did you catch the ruler faster when your eyes were open?

2. With which hand did you catch the ruler faster when your eyes were closed?

3. Did you catch the ruler faster with your eyes open or closed?

4. Explain why a message moving along nerve pathways takes time.

5. Describe the nerve pathway that the message followed when you saw the ruler fall.

GENERALIZATION

It is the center of all mental activity including thought, learning, and memory. Together with the endocrine system, the nervous system is responsible for regulating and maintaining homeostasis. Through its receptors, the nervous system keeps us in touch with our environment, both external and internal.