BIO 253 EXAM 2 UPDATED Exam
Questions and CORRECT Answers
What Is The Function Of The Nervous System? - CORRECT ANSWER - - master
regulatory system
- sends and receives information
- maintains homeostasis
-acts as center for thought, learning, and memory
What is Sensory Input? - CORRECT ANSWER - Apart of the nervous system that detects
change.
What is Integration and Processing? - CORRECT ANSWER - apart of the nervous system
that is decision making.
What is Motor Output? - CORRECT ANSWER - apart of the nervous system that
stimulates muscles and glands to respond.
What Are The Main Cell Types of Nervous System? - CORRECT ANSWER - Neurons
and Neurogila
What are Neurons? - CORRECT ANSWER - -one of the main cells in the NS
- respond quickly to changes/stimuli
- conduct electric impulses via neurotransmitters
What is a Neuroglia Cell? - CORRECT ANSWER - - 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? - CORRECT ANSWER - 1. sensory
receptor = sensor input
2. brain and spinal cord = intergration
3. effector = motor output
What is the CNS Made Up Of? - CORRECT ANSWER - the brain and spinal cord
What Is The PNS Made Up Of? - CORRECT ANSWER - cranial nerves and spinal nerves.
connects CNS to other body parts
What Is Sensory Function? - CORRECT ANSWER - - nervous system receives
information
- sensory receptors gather info by detecting changes
- info is carried to the CNS
What Is Integrative Function? - CORRECT ANSWER - - NS coordinates sensory info to
create sensations, memory, and thoughts
- NS makes decisions on body's response to sensory info
What Is Motor Function? - CORRECT ANSWER - - 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? - CORRECT ANSWER - it transmits VOLUNTARY
instructions to skeletal muscles.
What Is The Autonmic NS? - CORRECT ANSWER - transmits INVOLUNTARY
instructions from the CNS to smooth muscles, cardiac muscle, and glands.
, What Does The Cell Body Consist Of? - CORRECT ANSWER - 1. neurofilaments
2. chromatophilic substance
What Does The Axon Consist Of? - CORRECT ANSWER - 1. axon hillock
2. collaterals
3. axon terminal
4. synaptic knob
5. may be myelinated
What Is A Schwann Cell? - CORRECT ANSWER - - 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? - CORRECT ANSWER - gaps in myelin sheath
between schwann cells.
What Are Multipolar Neurons? - CORRECT ANSWER - - 99% of neurons
- many processes
- most neurons of CNS
What Are Bipolar Neurons? - CORRECT ANSWER - - two processes
- eyes, ear, nose
What Are Unipolar Neurons? - CORRECT ANSWER - - one process
- cell bodies are ganglia
Questions and CORRECT Answers
What Is The Function Of The Nervous System? - CORRECT ANSWER - - master
regulatory system
- sends and receives information
- maintains homeostasis
-acts as center for thought, learning, and memory
What is Sensory Input? - CORRECT ANSWER - Apart of the nervous system that detects
change.
What is Integration and Processing? - CORRECT ANSWER - apart of the nervous system
that is decision making.
What is Motor Output? - CORRECT ANSWER - apart of the nervous system that
stimulates muscles and glands to respond.
What Are The Main Cell Types of Nervous System? - CORRECT ANSWER - Neurons
and Neurogila
What are Neurons? - CORRECT ANSWER - -one of the main cells in the NS
- respond quickly to changes/stimuli
- conduct electric impulses via neurotransmitters
What is a Neuroglia Cell? - CORRECT ANSWER - - 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? - CORRECT ANSWER - 1. sensory
receptor = sensor input
2. brain and spinal cord = intergration
3. effector = motor output
What is the CNS Made Up Of? - CORRECT ANSWER - the brain and spinal cord
What Is The PNS Made Up Of? - CORRECT ANSWER - cranial nerves and spinal nerves.
connects CNS to other body parts
What Is Sensory Function? - CORRECT ANSWER - - nervous system receives
information
- sensory receptors gather info by detecting changes
- info is carried to the CNS
What Is Integrative Function? - CORRECT ANSWER - - NS coordinates sensory info to
create sensations, memory, and thoughts
- NS makes decisions on body's response to sensory info
What Is Motor Function? - CORRECT ANSWER - - 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? - CORRECT ANSWER - it transmits VOLUNTARY
instructions to skeletal muscles.
What Is The Autonmic NS? - CORRECT ANSWER - transmits INVOLUNTARY
instructions from the CNS to smooth muscles, cardiac muscle, and glands.
, What Does The Cell Body Consist Of? - CORRECT ANSWER - 1. neurofilaments
2. chromatophilic substance
What Does The Axon Consist Of? - CORRECT ANSWER - 1. axon hillock
2. collaterals
3. axon terminal
4. synaptic knob
5. may be myelinated
What Is A Schwann Cell? - CORRECT ANSWER - - 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? - CORRECT ANSWER - gaps in myelin sheath
between schwann cells.
What Are Multipolar Neurons? - CORRECT ANSWER - - 99% of neurons
- many processes
- most neurons of CNS
What Are Bipolar Neurons? - CORRECT ANSWER - - two processes
- eyes, ear, nose
What Are Unipolar Neurons? - CORRECT ANSWER - - one process
- cell bodies are ganglia
