اعصابی ہم آہنگی

Written by Dr. Hira Salman (Biology)

بارہویں جماعت · حیاتیات · 8 سوالات

نام: ____________________   تاریخ: ____________

1. The resting membrane potential of a neuron is about:

   • A +30 mV
   • B +70 mV
   • C -70 mV
   • D 0 mV

2. An impulse jumps from node to node along a myelinated axon. This is called:

   • A Reflex
   • B Saltatory conduction
   • C Osmosis
   • D Diffusion

3. The gap between two neurons is the:

   • A Dendrite
   • B Node
   • C Synapse
   • D Axon

4. Acetylcholine is a:

   • A Hormone from the thyroid
   • B Neurotransmitter
   • C Vitamin
   • D Enzyme

5. The part of the brain that controls heart rate and breathing is the:

   • A Pituitary
   • B Cerebellum
   • C Cerebrum
   • D Medulla oblongata

6. The part of a neuron that receives signals is the:

   • A Myelin sheath
   • B Dendrite
   • C Axon
   • D Synapse

7. The sheath around many axons that speeds impulses is made of:

   • A Keratin
   • B Cellulose
   • C Myelin
   • D Chitin

8. A reflex arc involves a sensory neuron, a relay neuron and a:

   • A Motor neuron
   • B Hormone
   • C Muscle spindle only
   • D Gland only