Test 4 - Topic 20 Flashcards
_________ - A nerve cell, the basic unit of communication through the body
Neuron
-Three types of Neurons-
_________ - Receptors for specific stimuli
Sensory Neurons
-Three types of Neurons-
_________-
- Neurons found in the brain and spinal chord
- Neurons responsible for figuring out what information is called and what to do about it
Interneurons
-Three types of Neurons-
Interneurons:
- Neurons found in the brain and _________
- Neurons responsible for figuring out what _________ is called and what to do about it
- spinal chord
- information
-Three types of Neurons-
_________ -
Send information from brain and spinal cord to muscles and glands
Motor Neurons
_________ -
Cells that physically support and protect the neurons in various ways
Neuroglial Cells
-Three Basic Parts of the Neuron-
_________ - Contains nucleus and most of the organelles
Cell Body - (soma)
_________ - (soma)
Cell Body
-Three Basic Parts of the Neuron-
_________ :
- There is a lot of them
- Short extensions off of cell body
- Receive stimuli, “input zone”
Dendrites
-Three Basic Parts of the Neuron-
Dendrites:
- There is a lot of them
- Short extensions off of _________
- Receive stimuli, “_________ “
- cell body
- input zone
-Three Basic Parts of the Neuron-
_________ - Usually just one, long extension that transmit impulses to other cells. “output zone”
Axons
-Three Basic Parts of the Neuron-
Axons - Usually just one, long extension that _________ impulses to other cells. “_________”
- transmits
- output zone
_________ -
An electric charge that moves down the neuron membrane, starts in dendrite -> cell body -> axon, in one direction only
Nerve Impulse
Nerve Impulse -
An electric charge that moves down the _________ membrane, starts in _________ -> cell body -> _________, in one direction only
- neuron
- dendrite
- axon
_________ - A junction between a neuron and an adjacent cell
Synapses
-Nervous System-
The more elaborate the nervous system, the more _________ the life-style of an ________ is
- complex
- animal
-Nervous System-
_________ :
- Simple functions
- Stereotyped movements made in response to a specific stimulus
- Sensory neuron triggers a motor neuron
Reflex
-Nervous System-
Reflex:
- Simple functions
- _________ movements made in response to a specific stimulus
- Sensory _________ triggers a motor neuron
-Stereotyped
neuron
-Nervous System-
_________ :
- Allows for more control for reflex actions
- The more the brain regions, the more complex life style of animal
Brain Regions
-Nervous System-
Brain Regions:
- Allows for more control for _________ actions
- The more the brain regions, the more _________ life style of animal
- reflex
- complex
_________ :
- Brain - Responsible for integration of internal and external stimuli
- Spinal - Pathway of signals that travel between the peripheral nervous system and the brain
Central Nervous System
-Central Nervous System-
_________ - Responsible for integration of internal and external stimuli
_________ - Pathway of signals that travel between the peripheral nervous system and the brain
- Brain
- Spinal
- Central Nervous System-
- Brain - Responsible for integration of internal and external _________
- Spinal - Pathway of signals that travel between the peripheral _________ system and the brain
- stimuli
- nervous
-Peripheral Nervous System-
–Two sets of nerves
- _________ Nerves (31 pairs) - Connects spinal cord with most parts of the body
- _________ Nerves (12 pairs) - Connects the brain with vital organs and facial muscles
- Spinal
- Cranial
-Peripheral Nervous System-
–Two sets of nerves
- Spinal Nerves (__ pairs) - Connects _________ cord with most parts of the body
- Cranial Nerves (__ pairs) - Connects the brain with vital organs and _________ muscles
- 31
- spinal
- 12
- facial
-Peripheral Nervous System-
Some cranial nerves are only _________ , some are both sensory and _________ nerves
- sensory
- motor
-Peripheral Nervous System-
_________ are both sensory and motor nerves
Spinal nerves
- Brain Regions-
- Hindbrain
–_________
- Control respiration
- Control blood circulation
- Control sleep/wake response
Medulla oblongata
- Brain Regions-
- Hindbrain
–Medulla oblongata
- Control _________
- Control blood circulation
- Control _________ response
- respiration
- sleep/wake
- Brain Regions-
- Hindbrain
– _________
- Reflex center to maintain posture
- Coordination of limbs
Cerebellum
- Brain Regions-
- Hindbrain
–Cerebellum
- Reflex center to maintain _________
- Coordination of _________
- posture
- limbs
- Brain Regions-
- Hindbrain
–_________
- Bridge between brain centers
Pons
- Brain Regions-
- Hindbrain
–Pons
- Bridge between _________ centers
brain
-Brain Regions-
_________-
Sort visual, auditory, factory input, and sends this information to the correct brain region for integration
Midbrain
- Brain Regions-
- Midbrain
Sort visual, _________, factory input, and sends this information to the correct _________ region for integration
- auditory
- brain
- Brain Regions-
- Forebrain
–_________
Most of integration happens here, - Integrates sensory input and selects motor responses
Cerebrum
- Brain Regions-
- Forebrain
–Cerebrum
Most of _________ happens here, - Integrates sensory input and selects _________ responses
- integration
- motor
- Brain Regions-
- Forebrain
– _________
Relays and coordinates sensory signals
Thalamus
- Brain Regions-
- Forebrain
–Thalamus
Relays and coordinates _________ signals
sensory
- Brain Regions-
- Forebrain
– _________
Monitors internal organs and influences your response to hunger, thirst, and sex
Hypothalamus
- Brain Regions-
- Forebrain
–Hypothalamus
Monitors internal _________ and influences your response to hunger, _________, and sex
- organs
- thirst
- Brain Regions-
- Forebrain
– _________
Only mammals have this specific sight of coding and decoding information
Cerebral cortex
- Brain Regions-
- Forebrain
–Cerebral cortex
Only _________ have this specific sight of coding and _________ information
- mammals
- decoding
_________ :
The storage and retrieval of information about previous experiences
Memory
_________ -
Information is stored, specifically these are chemical and structural changes in the brain regions
Memory Traces
Memory Traces -
Information is stored, specifically these are _________ and structural changes in the _________ regions
- chemical
- brain
_________ Memory -
Lasts for a few seconds to a few hours. Limited to 7-8 bits of information
Short-term
Short-term Memory -
Lasts for a few seconds to a few _________. Limited to ___ bits of information
- hours
- 7-8
_________ Memory -
Much more permanent and seemingly limitless
Long-term
Long-term Memory -
Much more permanent and seemingly _________
limitless
_________ - the loss of short-term or long-term memory or both
Amnesia
_________ - How alert you are or are not. Controlled by central nervous system, can be altered very easily
State of Consciousness
State of Consciousness - How alert you are or are not. Controlled by _________ , can be altered very easily
central nervous system
-Three components of sensory system-
_________ - Specialized cells that detect stimuli
Sensory receptors
-Three components of sensory system-
_________ - Pathways that carry the signals back to the brain
Nerve pathways
-Three components of sensory system-
_________ - Sensory information is processed
Brain Regions
_________ - Conscience awareness of a stimuli
_________ - Understanding what a sensation means
- Sensation
- Perception
Sensation - Conscience awareness of a _________
Perception - Understanding what a _________ means
- stimuli
- sensation
-Sensory Receptors-
_________ - Chemical molecules
- Olfactory - Smelling
- Taste - Taste buds
Chemoreceptors
-Sensory Receptors-
Chemoreceptors - Chemical molecules
_________ - Smelling
_________ - Taste buds
- Olfactory
- Taste
-Sensory Receptors-
_________ - Detect changes in pressure, position, and acceleration
Mechanoreceptors
-Sensory Receptors-
_________ - Detect light
Photoreceptors
-Sensory Receptors-
_________ - Detect heat
Thermoreceptors
-Sensory Receptors-
_________ - Detect pain
Nociceptors
-Sensations-
_________ - Most found in fingertips and genital regions
Touch and pressure
-Sensations-
_________ - Perception of inquiry to some part of the body
Pain
-Sensations-
_________ - Pain that is felt at a distance from the real stimulation
Visceral pain
-Sensations-
_________ - Receptors that are found in muscle, joints, tendons, and ligaments, give awareness of your body’s position
Muscle sense
-Sensations-
Muscle sense - Receptors that are found in muscles, joints, _________, and ligaments, give _________ of your body’s position
- tendons
- awareness
-Sensations-
_________ - Depends on organs of equilibrium. Found in inner ear
Balance
-Sensations-
_________ - Overstimulation of dendrites in inner ear
Motion sickness
-Vision Structure-
_________ - White part of eye
Sclera
-Vision Structure-
_________ - Extension of sclera that is clear and covers front of eye
Cornea
-Vision Structure-
_________ - Focuses an image on back of eye
Lens
-Vision Structure-
_________ - Photoreceptor in back of eye
Retina
-Vision Structure-
–Two types of _________
- Cones - Daytime vision, detect color
- Rods - Nighttime vision, detects black white and grey
photoreceptors
-Vision Structure-
–Two types of photoreceptors
- _________ - Daytime vision, detect color
- _________ - Nighttime vision, detects black white and grey
- Cones
- Rods