CH10
This muscle is the main muscle of respiration.
What is the diaphragm?
The division responsible for fight or flight.
What is the sympathetic nervous system?
This brain region coordinates balance and posture.
What is the cerebellum?
These muscles stabilize the origin of a prime mover so it can act more efficiently.
What are fixators?
This muscle closes the jaw and is one of the strongest in the body.
What is the masseter?
This type of muscle contraction occurs when tension increases but the muscle does not shorten.
What is an isometric contraction?
Type of neuron with one axon and one dendrite.
What is a bipolar neuron?
This structure links emotion with memory and behavior.
What is the limbic system?
This contraction happens when the muscle lengthens while maintaining tension.
What is an eccentric contraction?
Region between axon terminal and postsynaptic membrane.
What is the synaptic cleft?
This type of lever system has the fulcrum between the load and effort, like a seesaw.
What is a first-class lever?
Ion that rushes into the neuron during depolarization.
What is sodium (Na+)?
Area involved in language comprehension.
What is Wernicke’s area?
Region of the neuron where the action potential is first generated.
What is the axon hillock?
PNS glial cells responsible for myelination.
What are Schwann cells?
This muscle compresses the abdomen and flexes the vertebral column.
What is the rectus abdominis?
The period during which a neuron cannot fire another impulse.
What is the refractory period?
This gland secretes melatonin that helps regulate sleep-wake cycle
What is the pineal gland?
Motor neurons exit the spinal cord via this root.
What is the ventral root?
Disorder with tremors and dopamine deficiency.
What is Parkinsons disease?
Break down the name sternocleidomastoid. Explain its origin, insertion, and action.
What is: originates on sternum and clavicle (cleido), inserts on mastoid process; rotates and flexes the head.
This graded potential occurs when the membrane becomes more negative.
What is hyperpolarization?
Damage to this area results in difficulty forming speech, known as expressive aphasia.
What is Broca’s area?
The brain stem consists of three regions:
What is midbrain, pons, and medulla oblongata?
The channel running through the midbrain that connects third and fourth ventricles.
What is the cerebral aqueduct?