This is a cell signaling factor that travels through the blood and can signal to target cells in multiple organs simultaneously.
What is a hormone?
This is the structure that delivers the ovulated egg to the uterus.
What are the uterine tubes (or fallopian tubes)?
These are the small tubules where spermatogenesis occurs.
What are the seminiferous tubules?
This chamber of the heart has the thickest walls.
What is the left ventricle?
These are the leakiest type of small vessel.
What are sinusoids?
This is a hormone that is released by the posterior pituitary in response to high blood osmolarity.
What is ADH?
This is the thickest layer of the uterine wall.
What is the myometrium?
This is the serous membrane that surrounds the testes.
What is the tunica vaginalis?
This type of valve closes when ventricular systole occurs.
What are AV (atrioventricular) valves?
This is a plasma protein involved in the clotting process.
What is fibrinogen?
These are hormones released by the medulla of the adrenal gland.
What are catecholamines? (or what are epinephrine and norepinephrine?)
This structure releases large amount of progesterone during the luteal phase.
What is the corpus luteum?
This muscle contracts to elevate the testes.
What is the cremaster muscle?
This is a phase of the cardiac cycle where all valves are closed and pressure inside the ventricle is building.
What is the isovolumetric contraction phase?
What is cardiac output?
What is PDE (phosphodiesterase)?
A spike in this hormone triggers ovulation.
What is LH?
These cells secrete testosterone in the testes.
What are interstitial endocrine cells?
This is the main pacemaker of the heart.
What is the SA (sinoatrial) node?
This vessel that is part of the coronary circulation returns blood to the right atrium.
What is the coronary sinus?
These are non-lipid based hormones that bind to intracellular receptors.
What are the thyroid hormones?
This phase of the uterine cycle aligns with the luteal phase of the ovarian cycle.
What is the secratory phase?
What is FSH?
The rapid entry of this ion is responsible for the depolarization of cardiac contractile cells.
What is Na+ (sodium)?
This hormone is released by the heart when blood pressure is too high.
What are the natriuretic peptides (ANP and BNP)?