The human brain

Option A2

Essential idea: The parts of the brain specialize in different functions.

Understandings

A.2.U1 The anterior part of the neural tube expands to form the brain

Brain formation in the neural tube

A.2.U2 Different parts of the brain have specific roles

Parts of the brain

A.2.U3 The autonomic nervous system controls involuntary processes in the body using centers located mainly in the brainstem

The makeup of the autonomic nervous system

A.2.U4 The cerebral cortex formed a larger proportion of the brain and is more highly developed in humans and other animals

Diagrams of mouse, macaque monkey and human cerebral cortex

What comparisons can be made between a mouse, macaque monkey and human cerebral cortexes?

Diagrams of mouse, macaque monkey and human cerebral cortex explained

A.2.U5 The human cerebral cortex has become enlarged principally by an increase in total area with extensive folding to accommodate it within the cranium

Diagrams of mouse, macaque monkey and human cerebral cortex
Diagrams of mouse, macaque monkey and human cortex folding explained

A.2.U6 The cerebral hemispheres are responsible for higher order functions

Cerebral hemispheres and higher order functions

A.2.U7 The left cerebral hemisphere receives sensory input from sensory receptors in the right side of the body and the right side of the visual field in both eyes and vise versa for the right hemisphere

Crossover of sensory input

A.2.U8 The left cerebral hemisphere controls muscle contraction in the right side of the body and vice versa for the right hemisphere

Crossover of motor imput

A.2.U9 Brain metabolism requires large energy imports

Table of resting energy expenditure of organs/tissues in human body
Brain metabolism explained

Applications

A.2.A1 Visual cortex, Brocca's area, nucleus accumbens as areas of the brain with specific functions

Function of visual cortex, nucleus accumbens and Brocca's area

A.2.A2 Swallowing, breathing and heart rate as examples of activities coordinated by the medulla

Medulla and control of breathing, heart rate and swallowing

A.2.A3 Use of the pupil reflex to evaluate brain damage

Diagram of the pupil reflex

A.2.A4 Use of animal experiments, autopsy, lesions and fMRI to identify the role of different parts of the brain

Animal experiments, lesions and brain function

Skills

A.2.S1 Identification of parts of the brain in a photograph, diagram or scan of the brain

Place your mouse cursor on the figure to reveal the location of nucleus accumbens

Scan nucleus accumbens

Place your mouse cursor on the figure to reveal the answer

Diagram for Brocca's area and visual cortex

A.2.S2 Analysis of correlations between body size and brain size in different animals

Graph of releationship between brain weight vs body weight
Relationship between brain weight and body weight explained
Back to top of page

Valid XHTML 1.0 Strict Valid CSS!