Questions All Solved Correct 2025-
2026 Updated.
Two divisions of the Nervous System - Answer 1. Central nervous system (CNS)
2. Peripheral nervous system (PNS)
Central nervous system - Answer Consists of the brain and spinal cord
Peripheral nervous system - Answer - consists of cranial and spinal nerves
- connects CNS to muscles, glands, & all sensory receptors
Nervous Tissue - Answer Controls and integrates all body activities within limits that maintain
life
Three basic functions of nervous tissue - Answer - Sensing changes with sensory receptors
- Interpreting and remembering those changes
- reacting to those changes with effectors
* muscular contractions
* glandular secretions
Subdivisions of the PNS - Answer - Somatic (voluntary) nervous system (SNS)
- Autonomic(involuntary) nervous system
- Enteric nervous system (ENS)
Somatic nervous system - Answer - neurons from receptors to the CNS
- motor neurons to skeletal muscle tissue
Autonomic nervous systems - Answer - sensory neurons from visceral organs to CNS
- motor neurons to smooth and cardiac muscle and glands
* sympathetic division (speeds up heart rate) - makes pupils larger
, - neurons function independently of ANS & CNS
Neurons (nerve cells) - Answer The functional unit of the nervous system that have electrical
excitability
Cell body - Answer Single nucleus with prominent nucleolus
Cell processes - Answer Dendrites & axons
Parts of a neuron - Answer - neuroglial cells
- nucleus with nucleolus
- cell body
- axons or dendrites
Dendrites - Answer - conducts impulses TOWARDS the cell body
- surfaces specialized for contact with other neurons
(the more activity you do, the more dendrite branches that grow)
Axons - Answer - conduct impulses AWAY from cell body
- swollen tips called SYNAPTIC END BULBS contain vesicles filled with neurotransmitters
(AXONS = AWAY)
Functional classification of neurons - Answer - Sensory (afferent) neurons
* transport sensort INFORMATION TO CNS motor (efferent) neurons
- Motor (efferent) neurons
* Send motor nerve impulses to muscles and glands (AWAY FROM CNS)
Structural classification of neurons - Answer Based on number of processes found on cell body
- multipolar
- bipolar neurons
-unipolar neurons