7.4 Nervous System

Reflex arcs are characterized by:

• Bidirectional response

• Conscious control

• Involuntary response

• Sensory pathway only

Which neurological condition is characterized by damage to the myelin sheath in the CNS?

• Multiple sclerosis

• Parkinson's disease

• Guillain-Barré syndrome

• Schizophrenia

Which area of the brain is responsible for speech production?

• Parietal lobe

• Occipital lobe

• Temporal lobe

• Frontal lobe

Which of the following animals exhibits a net-like nervous system?

• Planarians

• Hydras

• Annelids

• Arthropods

Which type of receptors are responsible for detecting touch, assisting in balance, and detect sound waves?

• Chemoreceptors

• Mechanoreceptors

• Photoreceptors

• Baroreceptors

Which cells form the myelin sheath around axons in the PNS?

• Schwann cells

• Astrocytes

• Oligodendrocytes

• Microglia

What is the primary function of ependymal cells in the CNS?

• Provide structural support

• Scavenge pathogens

• Produce cerebrospinal fluid

• Form myelin sheath

Which disease results from the destruction of dopamine-producing neurons in the brain?

• Multiple sclerosis

• Parkinson's disease

• Guillain-Barré syndrome

• Schizophrenia

Which division of the autonomic nervous system is responsible for the "fight or flight" response?

• Sympathetic division

• Parasympathetic division

• Somatic system

• Enteric division

Which division of the nervous system controls conscious skeletal muscle movement?

• Sympathetic division

• Parasympathetic division

• Somatic system

• Enteric division