MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH
LATEST QUESTIONS AND ANSWERS.
What Is The Function Of The Nervous System?
- master regulatory system
- sends and receives information
- maintains homeostasis
-acts as center for thought, learning, and memory
What is Sensory Input?
Apart of the nervous system that detects change.
What is Integration and Processing?
apart of the nervous system that is decision making.
What is Motor Output?
apart of the nervous system that stimulates muscles and glands to respond.
What Are The Main Cell Types of Nervous System?
Neurons and Neurogila
What are Neurons?
-one of the main cells in the NS
- respond quickly to changes/stimuli
- conduct electric impulses via neurotransmitters
What is a Neuroglia Cell?
- one of the main cells in the NS
- protect, support, insulate, and nourish neurons
- do not conduct electrical impulses like neurons
What Is The Flow Of Information In The NS?
1. sensory receptor = sensor input
2. brain and spinal cord = intergration
3. effector = motor output
What is the CNS Made Up Of?
the brain and spinal cord
What Is The PNS Made Up Of?
cranial nerves and spinal nerves. connects CNS to other body parts
What Is Sensory Function?
, - nervous system receives information
- sensory receptors gather info by detecting changes
- info is carried to the CNS
What Is Integrative Function?
- NS coordinates sensory info to create sensations, memory, and thoughts
- NS makes decisions on body's response to sensory info
What Is Motor Function?
- decisions are acted upon
- impulses are carried to effectors ( muscles and glands)
- divisions of motor portion of PNS: somatic NS and autonmic NS
What Is The Somatic NS?
it transmits VOLUNTARY instructions to skeletal muscles.
What Is The Autonmic NS?
transmits INVOLUNTARY instructions from the CNS to smooth muscles, cardiac muscle, and glands.
What Does The Cell Body Consist Of?
1. neurofilaments
2. chromatophilic substance
What Does The Axon Consist Of?
1. axon hillock
2. collaterals
3. axon terminal
4. synaptic knob
5. may be myelinated
What Is A Schwann Cell?
- PNS neuroglia that encase axon in a sheath
- schwann cell wrap tightly around axon in layers composed of of myelin a lipoprotein mixture
- coating is called the Myelin Sheath
- Nodes of Ranvier
What Are The Nodes Of Ranvier?
gaps in myelin sheath between schwann cells.
What Are Multipolar Neurons?
LATEST QUESTIONS AND ANSWERS.
What Is The Function Of The Nervous System?
- master regulatory system
- sends and receives information
- maintains homeostasis
-acts as center for thought, learning, and memory
What is Sensory Input?
Apart of the nervous system that detects change.
What is Integration and Processing?
apart of the nervous system that is decision making.
What is Motor Output?
apart of the nervous system that stimulates muscles and glands to respond.
What Are The Main Cell Types of Nervous System?
Neurons and Neurogila
What are Neurons?
-one of the main cells in the NS
- respond quickly to changes/stimuli
- conduct electric impulses via neurotransmitters
What is a Neuroglia Cell?
- one of the main cells in the NS
- protect, support, insulate, and nourish neurons
- do not conduct electrical impulses like neurons
What Is The Flow Of Information In The NS?
1. sensory receptor = sensor input
2. brain and spinal cord = intergration
3. effector = motor output
What is the CNS Made Up Of?
the brain and spinal cord
What Is The PNS Made Up Of?
cranial nerves and spinal nerves. connects CNS to other body parts
What Is Sensory Function?
, - nervous system receives information
- sensory receptors gather info by detecting changes
- info is carried to the CNS
What Is Integrative Function?
- NS coordinates sensory info to create sensations, memory, and thoughts
- NS makes decisions on body's response to sensory info
What Is Motor Function?
- decisions are acted upon
- impulses are carried to effectors ( muscles and glands)
- divisions of motor portion of PNS: somatic NS and autonmic NS
What Is The Somatic NS?
it transmits VOLUNTARY instructions to skeletal muscles.
What Is The Autonmic NS?
transmits INVOLUNTARY instructions from the CNS to smooth muscles, cardiac muscle, and glands.
What Does The Cell Body Consist Of?
1. neurofilaments
2. chromatophilic substance
What Does The Axon Consist Of?
1. axon hillock
2. collaterals
3. axon terminal
4. synaptic knob
5. may be myelinated
What Is A Schwann Cell?
- PNS neuroglia that encase axon in a sheath
- schwann cell wrap tightly around axon in layers composed of of myelin a lipoprotein mixture
- coating is called the Myelin Sheath
- Nodes of Ranvier
What Are The Nodes Of Ranvier?
gaps in myelin sheath between schwann cells.
What Are Multipolar Neurons?
