Neural control and coordination

Sudden withdrawal of body parts in contact with hot or cold or reflex action is due to response to

Peripheral nervous system stimulation that occur involuntarily

Without concious effort or thought

But requires involvement of a part of CNS

Afferent neuron also called___

Efferent neurons also called___

Receptor

Effector or excitor

Hindbrain consists of_____

Major regions that make up the brain stem_______

Pons, medulla, cerebellum

Pons, medulla, midbrain

• Pons, cerebellum and medulla introduction

Pons consists of fibre tracts which interconnect different regions of the brain

Cerebellum has very convoluted surface in order to provide the additional space for many more neurons

The medulla of the brain is connected to the spinal cord. CAR GAS RE

Matlab medulla contains centre which control cardiovascular reflexes, gastric secretions and respiration.

Brain stem role

Brain stem forms the connection between the brain and the spinal cord

Midbrain is located

It is located between the thalamus/hypothalamus of forebrain and pons of hindbrain.

A canal called cerebral aqueduct passes through midbrain

Corpora quadrigemina is located in

Dorsal portion of midbrain consists mainly of four round swellings or lobes called quadrigemina

Forebrain consists of

Cerebrum, thalamus, hypothalamus

Cerebrum 3 points about its parts

1. Cerebrum forms major part of the human brain

2. A deep cleft divides it into two halves longitudinally. These hemispheres are connected by a tract of nerve fibres called corpus callosum

3. The layer of cells which covers the cerebral hemispheres is called cortex and thrown into prominent folds.and its grey because of neuron cell bodies.

The cerebral cortex contains

Motor areas

Sensory areas

Large regions that are neither clearly sensory nor motor in function or association areas

Association areas are responsible for

Complex function like intersensory association

Memory and communication

Hehe it rhymes

Inner part of cerebral hemisphere is called white matter because

Fibres of tracts are covered with myelin sheath

The cerebrum wraps around a structure called_____ which is a major coordinating centre for

Thalamus

Sensory and motor signaling

Hypothalamus contains

A number of neurosecretory cells which control

Body temp

Urge for eating and drinking

Also contains several group of neurosecretory cells which secrete hypothalamic hormones

Limbic lobe or limbic system is composed of

Inner parts of cerebral hemisphere and a group of associated deep structures like amygdala and hippocampus etc.form a complex structure.

Limbic system is concerned with what in body

1. Gehri saas lo== olfaction

2. Padhne baitho== autonomic responses

3. Ghop ghop== regulation of sexual behaviour

4. Regret== expression of emotional reactions excitement.pleasure.rage.fear etc

5. Motivation reel== motivation