part 4 Flashcards

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1
Q

how are synapses formed

A

formed by the membranes of a presynaptic neuron and a postsynaptic neuron which may be separated by a synaptic cleft(chem synapse)

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2
Q

how does transmission of nerve impulse take place

A

when the impulse reaches the terminal inside the synaptic knob, there are synaptic vesicles. there are Ca+ outside which comes in and takes the synaptic vesicles till the end causing exocytosis.(chem synapse)

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3
Q

what does synaptic vesicles contain

A

they have certain chemicals inside them called neurotransmitters(chem synapse)

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4
Q

electrical synapse

A

faster than chemical synapse. the membranes lie close to each other.

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5
Q

structure of our human brain

A

inside the skull, the brain is covered by cranial meninges consisting of an outer layer : 1. Dura mater

  1. Arachnoid(middle layer)
  2. Pia mater(innermost layer)
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6
Q

brain is divided into 3 parts what are their names?

A
  1. Forebrain
  2. Midbrain
  3. Hindbrain
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7
Q

forebrain is divided into 3 parts what their names?

A
  1. Cerebrum
  2. Thalamus
  3. Hypothalamus
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8
Q

Cerebrum has two sides

A

Left cerebral hemisphere and right cerebral hemisphere which stays connected by a nerve fibre called corpus collosum

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