Muscles
Troponin and tropomyosin are associated with this type of myofilament
Actin
This is the period where a neuron membrane cannot respond to another stimulation
Absolute refractory period
This type of neuron transmits signals from sensory receptors to the CNS for processing
Sensory neurons
This lobe of the cerebrum is important for vision
Occipital lobe
These glial cells form the blood-brain barrier and regulate the movement of substances into the brain
Astrocytes
When a muscle is stimulated so frequently that the relaxation phase is eliminated and maximum tension is reached
Complete tetanus
A local change in membrane potential that cannot spread far from the site to stimulation
Graded potential
These neurons are located within the CNS and connect sensory and motor pathways
Intraneurons
This region of the brain contains the cardiovascular centers
Medulla oblongata
This vitamin is synthesized in the skin and is essential for calcium absorption in bone
Vitamin D
This molecule is released into the synaptic cleft in a somatic neuromuscular junction
Acetylcholine
This is the process of an action potential traveling across an unmeylinated axon
Continuous propagation
This root of the spinal nerve carries motor information away from the spinal cord
Anterior root
This cranial nerve is involved in sensory smells
CN I: Olfactory
This pigment is found in the midbrain and in the deepest layers of the epidermis
Melanin
In this phase, Ca2+ is pumped back into the SR, tropomyosin covers up active sites and the number of cross-bridges decreases
Relaxation phase
This phase of an action potential happens when voltage-gated Na+ channels open
Depolarization
This structure in the sympathetic nervous system allows neurotransmitter release along a axon without a single synaptic terminal
This is the space where cerebrospinal fluid (CSF) flows to surround the brain and spinal cord
Subarachnoid space
This layer of the skin contains sensory receptors that help transmit sensory information to the CNS.
Dermis
This term describes a single motor neuron and all the muscle fibers it controls
Motor unit
This channel is important for acetylcholine release from a presynaptic cell at a synapse
Voltage-gated Ca2+ channel
Acetylcholine is released by these types of neurons in both the sympathetic and parasympathetic nervous systems
Pre-ganglionic neurons
This structure of the limbic system is responsible for linking emotions with memories
Amygdala
This type of neuron carries signals from the spinal cord to skeletal muscle
Motor neuron