- After puberty, the thymus shrinks and is replaced by
- There are a total of _____ parathyroid glands
- What gland is known as the master endocrine gland?
- The thyroid produces which hormones that help with metabolism?
- The SA node generates impulses of ______ to _______ beats per minute
- The SA triggers the ___________ to contract
- The SA node is known as the ___________________ of the heart
- The posterior pituitary gland receives info from the
- The hypothalamus receives info from the brain and
- Branch into progressively smaller vessels called arterioles. These, in turn, deliver blood to capillaries
- Small vessels that carry blood from arteries and to small venules which empty into veins
- The fluid that delivers oxygen, hormones, and nutrients to the cells and carries away wastes
- Blood vessels that return blood to the heart
- These are types of cells in blood that cause blood clots to form
- Fluid in which other parts of the blood are suspended (mainly water but contain nutrients, hormones and salts)
- Wall of tissue that separates the 4 chambers
- Provides nutrients and oxygen, Carrie's away wastes, and helps fight disease
- Is a measure of the amount of force that the blood places on the walls of blood vessels, particularly large arteries, as it is pumped through the body
- Contains hemoglobin which is the oxygen carrying protein in the blood
- What are the 3 types of blood vessels in the circulatory system?