Which of the following glial cells work to synthesize myelin? A. Schwann cells B

Question

Which of the following glial cells work to synthesize myelin? A. Schwann cells B. Astrocytes C. Microglia D. Ependymal cells The _____ of a neuron receive(s) incoming signals and convey(s) them to the cell body. A. Axon B. Nucleoli C. Dendrites D. Glial cells Motor neurons are: A. Pseudounipolar B. Multipolar C. Bipolar D. Unipolar Action potentials are propagated quickly in myelinated neurons due to a concept known as _____. A. Saltatory conduction B. Lipid conduction C. Plateauing D. Voltage In myelinated neurons, voltage-gated cation channels are found only at _____, allowing for rapid transmission of action potentials. A. Dendrites B. Nodes of Ranvier C. Axon terminals D. Vesicles The resting potential of neurons is usually around: A. -99 mV B. -55 mV C. +30 mV D. -70 mV Opening of voltage-gated Na channels controls the _____ of an action potential. A. Hyperpolarization B. Depolarization C. Repolarization D. Threshold

Explanation / Answer

Ans 1 Schwann cell

Schwann cell are two types Myelinating Schwann cells which wrap around axons of motor and sensory neurons forming  a thick layer of insulation,and non myelinating Schwann cell.

Ans-2 A -axon

Axons are long slender projection that are covered with the myelin sheath and conducts incoming signals away from the cell body.

Ans-3 multipolar

Which contains single axon and multiple dendrites (branched projections of a neuron).

Ans-4 Saltatory conduction

the nerve impulse appears to jump from one node of Ranvier to the next node in saltatory conduction.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.