Nervous Tissue Quiz

What are the functions of the Nervous System?

• A. Only Sensory input

• B. Only Integration

• C. Sensory input, Integration, Control of Muscles and Glands, Homeostasis, Center for Mental Activities

• D. Only Control of Muscles and Glands

Which anatomical divisions make up the Nervous System?

• C. Central Nervous System (CNS) and Peripheral Nervous System (PNS)

• D. Autonomic Nervous System (ANS) only

• B. Peripheral Nervous System (PNS) only

• A. Central Nervous System (CNS) only

What is the function of the Sensory Division in the PNS?

• D. Innervates skeletal muscle

• C. Regulates resting functions

• B. Carries action potentials towards the CNS

• A. Transmits action potentials away from the CNS

Which Glial Cell is most abundant, versatile, and highly branched in the CNS?

• D. Astrocytes

• C. Oligodendrocytes

• B. Ependymal cells

• A. Microglial

What is the primary site of protein synthesis in a Neuron?

• C. Cell Body (Soma)

• D. Presynaptic terminal

• A. Dendrites

• B. Axon

What is the function of the Enteric Nervous System?

• A. Regulates resting functions

• B. Controls the Digestive System

• C. Innervates skeletal muscle

• D. Innervates cardiac muscle, smooth muscle, and glands

What is the role of the Node of Ranvier in myelinated axons?

• B. Electrically insulate fibers from one another

• D. Gaps in the myelin sheath

• A. Protect the axon

• C. Increase the speed of nerve impulse transmission

What is the function of the Schwann cells in the PNS?

• A. Form myelin sheath around axons of CNS neurons

• B. Support and nourish neuron cell bodies within ganglia

• C. Form a myelin sheath around part of the axon of a PNS neuron

• D. Provide a supportive scaffolding for neurons

What is the main function of Electrical Synapses?

• A. Produce graded potentials in postsynaptic neurons

• B. Generate ionic currents between cells

• C. Break down neurotransmitters

• D. Conduct action potentials slowly

What occurs during the Depolarization Phase of an Action Potential?

• C. Brief period of hyperpolarization following repolarization

• B. Return of the membrane potential toward the resting membrane potential

• A. Inside of the membrane becomes more positive

• D. Time during an action potential when a second stimulus cannot initiate another action potential