A demyelinating disease, such as multiple sclerosis, primarily affects which component of the nervous system and impairs what function?
Synaptic cleft; neurotransmitter release
Neuron cell body; protein synthesis
Myelin sheath; nerve impulse conduction
Dendrites; signal reception
Related Questions
Sense of smell is perceived by
Pituitary
Hypothalamus
Olfactory lobe
Cerebrum
The central nervous system consists of:
Brain and cranial nerves
Brain and spinal cord
Spinal cord and peripheral nerves
Cranial nerves and spinal nerves
Which of the following is not an organ of central nervous system?
Brain
Cranial nerves
Spinal cord
None of these
The myelin sheath, crucial for rapid nerve impulse transmission, is primarily composed of which macromolecule?
Proteins
Carbohydrates
Lipids
Nucleic acids
At the neuromuscular function
The muscle membrane possesses musculariae receptors
The motor nerve endings secrete norepinephrine
Curare leads to prolongation of neuromuscular transmission
The motor nerve endings secrete acetylcholine
Which cells are responsible for the production of the myelin sheath in the central nervous system?
Schwann cells
Oligodendrocytes
Astrocytes
Microglia
In parasympathetic nervous system, which of following is released?
Epinephrine
Norepinephrine
Serotonin
Acetycholine
Which of the following nerves is purely motor nerve?
Vagus
Facial
Abducens
Trigeminal
Which pair of systems jointly coordinate and integrate all the activities of the organs, so that they function in a synchronized fashion?
Neural and respiratory
Neural and digestive system
Neural and endocrine system
Neural and circulatory system
Which of the following functions is NOT primarily associated with the cerebrum?
Regulation of heart rate
Initiation of voluntary movements
Processing of sensory information
Language comprehension
