Control and Coordination Day 3

May 13, 2020

*We at St Columba's School, are ready to take the next step - and move towards using Google Classroom as a tool to enhance the teaching learning environment.

*This shift involves the school giving each student a unique email address, which he will need to setup ( the teachers will assist him in doing the same). This email will facilitate each student to interact with his teachers.

* The student should use this email ID only for:

-interacting with teachers on school /subject related matters

-keep the words and expressions as he would- if he were interacting with us as a Columban student

-use the facilities connected to this email ID only for google meets organised with the permission of a teacher

-he should have a copy of the permission given ( when and by which teacher and for what purpose)

-do not access any of the other facilities connected with this email address unless he first seeks the permission of a teacher

(He should have a copy of the permission given - when and by which teacher and for what purpose).

*Please note that Google and St Columba's have legal obligations by giving you access to this email address and hence,

you will need to sign an agreement when creating this email ID.

*Be informed that the history of use of this ID shall have a digital footprint !

CLASS 10 CHAPTER 7

CONTROL AND COORDINATION

Day 3

Dear Learners,

Thank you for Logging in! You're wonderful!😊

Note: Content written in blue should be recorded as notes in the Biology Notebook.

At the end of this class, you will be able to:

1. Describe the different parts of the brain.
2. Explain the different parts of the forebrain.
3. Explain the function of the Midbrain.
4. Draw the Human Brain.

Happy Learning!😊

THE HUMAN BRAIN:

https://youtu.be/DtkRGbTp1s8 (Check this video on the brain: parts and functions)

(to be drawn in bio notebook, refer to pg. 118 of N.C.E.R.T)

The human brain has three main regions:

(to be drawn in bio notebook)

(Not to be drawn in bio notebook)

Forebrain

It is the main thinking part of the brain. It has the following regions:

A. CEREBRUM

It is the largest part of the brain. It is made up of two cerebral hemispheres. It ha following different areas which performs different functions:

1. Sensory area: It receives the information from the sense organs through the receptors.

2. Motor area: They send the instructions to the effector organs(muscles) to control voluntary movements.

3. Association Area: It is associated with learning and intelligence. It has several other parts called lobes for controlling different activities:

* Temporal Lobe: it controls hearing.

* Occipital Lobe: it controls the vision.

* Frontal Lobe: it is responsible for speech and mental activities.

* Parietal Lobe: it controls taste, smell, and temperature.

* Olfactory Lobe: it receives impulses from olfactory receptors.

(Not to be drawn in bio notebook)

B. THALAMUS

It is the region that is present at the center of the forebrain. It serves as a relay station for impulses traveling to and from the spinal cord.

C. HYPOTHALAMUS
It is a small region present below the thalamus. It controls body temperature, hunger, thirst, blood pressure, etc. It is a part of the endocrine system that regulates the pituitary gland and other glands in our body.

Midbrain

It connects the forebrain with the hindbrain. It controls the movement of the head and neck (reflex movements). It controls the size of the pupil on entering a dark room or bright light.