Lesson Notes By Weeks and Term - Senior Secondary 2

TERM – 1^ST TERM

WEEK SEVEN

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: HEALTH EDUCATION

Topic: NERVOUS SYSTEM

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Describe the nervous system

II.) Identify the components of nervous system

III.) Identify the functions of the nervous system.

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

NOTE

NERVOUS SYSTEM

The nervous system is a complex network of specialized cells, tissues, and organs that coordinates and controls the activities of the body. It serves as the body's communication and control center, allowing for the integration of sensory information, processing of signals, and generation of responses to maintain homeostasis and respond to changes in the internal and external environment.

Component Of The Nervous System

1. Central Nervous System (CNS): The central nervous system consists of the brain and spinal cord and serves as the main control center for the entire nervous system. It integrates sensory information, processes signals, and generates responses to stimuli. The central nervous comprises of;

   - Brain: The brain is the most complex organ in the body and plays a central role in controlling and coordinating various physiological functions. It is responsible for processing sensory information, initiating motor responses, regulating homeostasis, and supporting higher cognitive functions such as thinking, learning, memory, and emotion

   - Spinal Cord: The spinal cord is a long, tubular structure that extends from the base of the brain down the vertebral column. It serves as a pathway for transmitting nerve signals between the brain and the rest of the body.

2. Peripheral Nervous System (PNS): The peripheral nervous system consists of nerves and ganglia located outside the central nervous system. It serves as a communication network between the central nervous system and the rest of the body, conveying sensory information to the CNS and transmitting motor signals from the CNS to muscles and glands.

Functions of the Nervous System

1.It collects sensory input from sensory receptors and transmits this information to the brain for processing. This includes sensations like touch, taste, smell, sight, and hearing.

2. The nervous system processes and interprets sensory input and decides on an appropriate response. This occurs mainly in the brain and spinal cord.
3. Once the nervous system has processed sensory information and made a decision, it sends motor commands to muscles and glands to carry out responses. This results in movements, behaviors, and physiological changes.
4. The nervous system helps maintain internal balance or homeostasis by regulating physiological processes such as body temperature, blood pressure, and blood glucose levels.
5. The nervous system is responsible for complex cognitive functions such as learning, memory, language, reasoning, and emotions, which are essential for human behavior and consciousness.

EVALUATION: 1. Identify all the components of the nervous system and state their roles.

2. Mention 4 functions of the nervous system.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively