Nervous system

Multiple Choice

which of the following is a function of the medulla oblangata ?

• Controls sensations

• Voluntary control

• coordinates muscle activity

• Controls respiratory system

Multiple Choice

Somatic nervous system sends impulses from the CNS to

• cardiac muscle

• smooth muscle

• skeletal muscle

• glands

Multiple Choice

Which of the following is a function of sympathetic nervous system ?

• increase heart rate

• decrease blood pressure

• increase urination

• decrease respiratory rate

Multiple Choice

Which part of the neuron receives information from other cells?

• Soma

• Myelin sheath

• Dendrites

• Axon

Multiple Choice

Which of the following is a neuroglia of PNS?

• Ependymal cells

• Microglia

• Astrocytes

• Satellite cells

Multiple Choice

Which of the following glial cells removes debris and pathogens by phagocytosis ?

• Ependymal cells

• Astrocytes

• Microglia

• Satellite cells

Multiple Choice

Which of the following values represents the resting membrane potential of a neuron?

• -55mv

• -60 mv

• -70mv

• -90mv

Multiple Choice

Depolarization of the membrane occurs due to

• Influx of K⁺

• Influx of Na⁺

• Efflux of K⁺

• Efflux of Na⁺

Multiple Choice

Which of the following is the neurotransmitter in the somatic nervous system?

• Epinephrine

• Dopamine

• Acetylcholine

• Serotonin

Fill in the Blanks

An action potential causes the opening of ------------ channels in the presynaptic cell.