-
Muscles can only do this ?, never this?
PULL, never push!
-
What one muscle group does, another ?
undoes
-
Three classes of levers (for muscle use) are dependent upon three things, name them
- load
- effort
- fulcrum (pivot point - example: elbow)
-
If the effort farther than load from fulcrum, then
mechanical advantage (less effort)
-
If the effort is nearer than load to fulcrum, then?
lever operates at mechanical disadvantage
-
-
-
-
-
third-class lever (tweezers - sort of...)
-
-
Attachment site to the stationary bone
Origin
-
Attachment site to the movable bone
Insertion
-
A group action that causes the movement?
Prime movers (agonists)
-
A group action that relaxes and yields to the movement?
Antagonists
-
A group action that steadies the movement?
Synergists
-
A group action that stabilizes the origin of the prime mover?
Fixators
-
Name nervous system's functions
- sensory input
- integration
- motor output
-
Name the two divisions of the nervous system
- Central nervous system (CNS)
- Peripheral nervous system (PNS)
-
What parts of the body belong to the central nervous system
-
What parts of the body belong to the peripheral nervous system?
- spinal nerves
- cranial nerves
-
Name the two functional divisions of the Peripheral nervous system (PNS)
- Sensory (Afferent)
- Motor (Efferent)
-
Name the two divisions of the Motor (efferent) division of the PNS
- Somatic nervous system
- Autonomic nervous system
-
-
autonomic means
involuntary
-
fight of flight (speed up)
sympathetic
-
rest and digest (slow down)
parasympathetic
-
Moves impulse Away from sensory receptor toward CNS
Afferent (AWAY)
-
Moves impulse from CNS toward the muscle to Excite it
Efferent (Excite muscle)
-
Name the two principal cell types of nervous tissue
-
small cells that surround and wrap delicate neurons
Neuroglia (the pit crew)
-
excitable cells that transmit electrical signals
Neurons (the race car drivers)
-
Name the 6 types of Neuroglia
- Astrocytes
- Microglial cells
- Ependymal cells
- Oligodendrocytes
- Satellite cells
- Schwann cells
-
This is the most abundant type of neuroglia that supports and braces neurons, guides migration of young neurons, and responds to nerve impulses
Astrocytes
-
This type of neuroglia forms the insulating myelin sheaths
Oligodendrocytes
-
This type of neuroglia surrounds all peripheral nerve fibers and form myelin sheaths in thicker nerve fibers
Schwann Cells
-
This is the structural units of the nervous system, highly specialized cells that conduct impulses with extreme longevity (last 100+ years)
Neurons
-
What establishes the resting potential of a neuron?
-
How is the inside of a neuron charged?
Negatively
-
What is the charge inside the neuron?
~-70mV
-
ATP moves potassium into the neuron and keeps what outside?
sodium
-
During the _____ phase, the threshold is crossed, and the membrane potential increases
rising phase
-
During the _____ phase, voltage-gated Na+ channels become inactivated; voltage-gated K+ channels open, and K+ flows out of the cell
falling phase
-
During the ______, or refractory period, the voltage-gated K+ channels close and resting potential is restored.
undershoot
-
Name the two categories of Postsynaptic potentials:
- Excitatory postsynaptic potentials (EPSP's)
- Inhibitory postsynaptic potentials (IPSP's)
-
This is a common neurotransmitter in vertebrates and invertebrates, involved in muscle stimulation, memory formation, and learning
Acetylcholine
-
The chief inhibitory neurotransmitter that is an amino acid
Gamma-aminobutyric acid (GABA)
-
Name the biogenic amines that are active in the CNS and PNS
- epinephrine
- norepinephrine
- dopamine
- serotonin
-
The brain and spinal cord contain
-
This type of matter consists of neuron cell bodies, dendrites, and unmyelinated axons
Gray matter
-
This type of matter consists of bundles of myelinated axons
White matter
-
The part of the hindbrain responsible for respiration, sleep, swallowing, etc.
Pons
-
The part of the hindbrain responsible for motor function
Medulla Oblongata
-
Name the 3 parts of the hindbrain
- Pons
- Medulla Oblongata
- Cerebellum
-
The part of the brain responsible for vision, hearing, motor control, sleep/wake, arousal, and temperature regulation?
Midbrain
-
The part of the brain containing the Diencephalon and Telencephalon
Forebrain
-
The forebrain makes up the __________ of the brain
Vast majority
-
The telencephalon (cerebrum) consists of 4 lobes, name them
- frontal
- parietal
- occipital
- temporal
-
Generation and experience of emotions involve many brain structures including...
- amygdala
- hippocampus
- thalamus
-
Motivation, olfaction, behavior, and memory are part of what structure?
Limbic system
-
The most important structure to the storage of emotion in the memory is the ?
amygdala
-
The largest structure in the brain, essential for awareness, language, cognition, memory, and consciousness?
Cerebral cortex
-
Area of the frontal lobe that is active when speech is generated?
Broca's area
-
Area of the temporal lobe that is active when speech is heard?
Wernicke's area
-
receptors that provide information about touch, pain, pressure, temperature, and the position of limbs
somatosensory
-
This lobe of the brain has substantial effect on executive functions
Frontal Lobe
-
the ability of the nervous system to be modified after birth
Neural plasticity
-
Short-term memory is accessed via the
Hippocampus
-
Long-term memory is stored where?
Cerebral cortex
-
patients have a persistent lack of interest or pleasure in most activities
major depressive disorder
-
characterized by manic (high-mood) and depressive (low-mood) phases
bipolar disorder
-
The disease is caused by the formation of neurofibrillary tangles and amyloid plaques in the brain
Alzheimer's Disease
-
a motor disorder caused by death of dopamine-secreting neurons in the midbrain
Parkinson's Disease
|
|