"Basic Methods of Neuromodulation" Regulation of Human Life Activities PPT Courseware 5

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"Basic Methods of Neuromodulation" Regulation of Human Life Activities PPT Courseware 5

Talk about feelings

When you first started learning to ride a bicycle, were you able to master your body balance? When the bicycle was about to fall over, what was your initial reaction?

How would you react if your hand accidentally touched fire?

How do you react when an object suddenly appears in front of your eyes?

find the reason

In fact, these are specific manifestations of neural regulation. We call these reactions reflexes.

The basic method of neuromodulation is reflex.

discuss

1. What is the reaction of the calf when the ligament is tapped? Think about it, is this reaction something you are born with, or is it something you acquire gradually in life?

When the ligament is tapped, the calf suddenly jumps up with the knee as the axis - and stretches forward rapidly. This reflex occurs in very young children and is innate.

2. Is the knee jerk reflex controlled by the brain? Why?

The knee jerk reflex is too late to think. The relevant nerve center is in the spinal cord, so it is not controlled by the brain.

However, when the knee jerk reflex is completed, the nerves in the spinal cord leading to the brain will transmit this nerve impulse to the brain, making the person feel that the knee is tapped.

Discussion and Analysis

1. What is the reaction of the calf when the ligament is tapped? Is this reaction innate or does it develop gradually in daily life?

2. Regarding reflexes such as knee jerk reflex, hand withdrawal reflex, blink reflex, and urination reflex (for infants), do you know that the brain is involved in controlling these reflexes?

Receptors: receive stimulation and generate impulses

1. The photoreceptor cells on the retina of the eye can receive light stimulation.

2. There are hair cells in the cochlea of ​​the ear that can receive sound stimulation.

3. There are olfactory cells on the mucous membrane of the nose that can receive changes in smells.

4. More, such as taste, touch...

Nerve center: receives signals and generates impulses

1. Visual center and auditory center of cerebral cortex

2. Somatic motor center of cerebral cortex

3. Knee jerk reflex center, hand withdrawal reflex center, and urination center of the spinal cord

4. More, such as taste, touch, defecation...

Reflect and improve

When the ligament is tapped, the calf suddenly jumps up with the knee as the axis - and stretches forward rapidly.

_______ function of spinal cord

At the same time as the knee jerk reflex is completed, the nerves in the spinal cord leading to the brain will transmit this nerve impulse to the brain, making the person feel a tap below the knee.

_______ function of spinal cord

analyze:

1. Eat plums to quench thirst

Such reflexes that humans and animals are born with are called simple reflexes (unconditioned reflexes).

2. Looking at plum blossoms to quench thirst

Like in 2 and 3, reflexes are acquired reflexes that are gradually formed during the life of a person or animal after birth, and are called complex reflexes (conditioned reflexes).

3. Talking about plums to quench thirst

Among them, the third type of conditioned reflex is related to human language and is a unique conditioned reflex of humans.

Unconditioned reflex:

An innate reflex acquired through inheritance that animals are born with

Conditioned reflex:

After an animal is born, it is an acquired reflex that is gradually formed through training during its life.

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For more information about the PPT courseware "Regulation of Human Life Activities and Basic Methods of Neural Regulation", please click on the "Regulation of Human Life Activities ppt Basic Methods of Neural Regulation" ppt tag.

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"Basic Methods of Neuromodulation" Regulation of Human Life Activities PPT Courseware 3:

"Basic Methods of Neuromodulation" Regulation of Human Life Activities PPT Courseware 3 Talking about Feelings 1. When your hand suddenly touches something very hot, how will you react? 2. When an object suddenly appears in front of your eyes, how will you react? Experimental knee-jerk reaction...

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Update Time: 2024-11-22

This template belongs to biology courseware People's Education Press seventh grade biology book volume 2 industry PPT template

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