Neural Tissue
Afferent neurons are ____ neurons that carry _____ information _____ the CNS.
Unipolar; Sensory; to
What kind of gated-channel would you expect to find at the axon terminals?
Voltage-gated Ca2+ channels.
What triggers the release of T3 and T4 from the Thyroid Gland?
Thyroid Stimulating Hormone (TSH)
n which organ are most clotting factors are produced?
The Liver
What is the role of the coronary arteries?
Supply blood to the heart
The addition of stimuli occurring in rapid succession at a single synapse is called _______.
Temporal Summation
Which neurotransmitter causes vasodilation?
Nitric Oxide
Which cells produce glucagon?
Alpha Cells (in Pancreas)
Where are B cells made?
Bone Marrow
Which cardiac cells are responsible for setting the pace of the heart by generating 60-100 action potentials per minute?
Sinoatrial Node (SA Node)
Chemicals released from one neuron that affects the membrane potential of another neuron.
Neurotransmitter
What is considered the "gateway" to the cerebral cortex?
Thalamus
What causes Cushing’s syndrome?
High Cortisol
Measures the percentage of whole blood occupied by red cells.
Hematocrit
__________ prolongs action potentials and is responsible for the actual contraction of the heart.
Ca2+ influx through voltage-gated channels
The time when another action potential can occur if the
membrane is sufficiently depolarized.
Relative Refractory Period
Which neurotransmitter is necessary for skeletal muscle movement?
Acetylcholine
The heart releases _____________ in response to ______ blood volume?
What kind of immunity is skin?
Innate
Which channel is responsible for the heart’s automaticity?
Na+ leak channels
Which glial cell provides myelination in the PNS?
Schwann Cells
Which part of the brain plays a major role in the endocrine system and emotions/ memory?
Hypothalamus
Calcitonin is produced by the ____________ in response to _____ Ca2+ levels.
Parafollicular cells of the Thyroid; high
Heme stripped of iron is converted to __________,
then _______.
Biliverdin; Bilirubin
A nurse records a patient's resting heart rate as 80 bpm. The patient's ECG indicates an EDV of 135mL and an ESV of 65mL. What is this patient's cardiac output?
SV x bpm = CO
70 mL/beat x 80 bpm = 5,600 mL/ minute