BSC 2085 Exam 3 UPDATED ACTUAL Questions and CORRECT
Answers
Which actually send the electrical signal? Neuron
, Neuron Cells that send and receive signals
Neuroglia (glial cells) Cells that support and protect neurons
Organs of the Nervous System Brain and spinal cord
Sensory receptors of sense organs (eyes, ears, etc.)
Nerves connect nervous system with other systems
Central Nervous System (CNS) Brain and spinal cord
Contains neural tissue, connective tissues, and blood vessels
Functions of the CNS to process and coordinate:
1. Sensory data from inside and outside body
2. Motor commands control activities of peripheral organs (e.g., skeletal muscles)
3. Higher functions of brain: intelligence, memory, learning, emotion
Peripheral Nervous System (PNS) Includes all neural tissue outside the CNS
Nerves (also called peripheral nerves)
Bundles of axons with connective tissues and blood vessels
Carry sensory information and motor commands in PNS
Cranial nerves - connect to brain
Spinal nerves - attach to spinal cord
Functions of the PNS Deliver sensory information to the CNS
Carry motor commands from the CNS to peripheral tissues and systems
What is a bundle of axons in the CNS called? a tract
what are in PNS? nerves
What are in the CVS? tracts
Functional Divisions of the PNS Afferent division
Efferent Division
Afferent Division AAAApproaches CNS
Carries sensory information
From PNS sensory receptors to CNS
Efferent division EEEEExits CNS
Carries motor commands
From CNS to PNS muscles and glands
Receptor Detect changes or respond to stimuli
Stimuli can be internal or external
Receptors can be found on neurons and specialized cells
Complex sensory organs (e.g., eyes, ears)
Effectors Respond to efferent signals
Cells and organs
Answers
Which actually send the electrical signal? Neuron
, Neuron Cells that send and receive signals
Neuroglia (glial cells) Cells that support and protect neurons
Organs of the Nervous System Brain and spinal cord
Sensory receptors of sense organs (eyes, ears, etc.)
Nerves connect nervous system with other systems
Central Nervous System (CNS) Brain and spinal cord
Contains neural tissue, connective tissues, and blood vessels
Functions of the CNS to process and coordinate:
1. Sensory data from inside and outside body
2. Motor commands control activities of peripheral organs (e.g., skeletal muscles)
3. Higher functions of brain: intelligence, memory, learning, emotion
Peripheral Nervous System (PNS) Includes all neural tissue outside the CNS
Nerves (also called peripheral nerves)
Bundles of axons with connective tissues and blood vessels
Carry sensory information and motor commands in PNS
Cranial nerves - connect to brain
Spinal nerves - attach to spinal cord
Functions of the PNS Deliver sensory information to the CNS
Carry motor commands from the CNS to peripheral tissues and systems
What is a bundle of axons in the CNS called? a tract
what are in PNS? nerves
What are in the CVS? tracts
Functional Divisions of the PNS Afferent division
Efferent Division
Afferent Division AAAApproaches CNS
Carries sensory information
From PNS sensory receptors to CNS
Efferent division EEEEExits CNS
Carries motor commands
From CNS to PNS muscles and glands
Receptor Detect changes or respond to stimuli
Stimuli can be internal or external
Receptors can be found on neurons and specialized cells
Complex sensory organs (e.g., eyes, ears)
Effectors Respond to efferent signals
Cells and organs
