Carbon dioxide is an acid or base?

Acid
Eccrine glands are what kind of gland?
Sweat or Sebaceous?
Sweat glands
Where is the blood going when the atrial contract during atrial systole?

Through the atrioventricular valves
Through the semilunar valves
atrioventricular valves
More CO2 in the blood makes pH increase or decrease?
Decrease
Low numbers on pH scale
Sweat glands or sebaceous glands are for protection of skin and hair?
Sebaceous glands
What heart sound is heard when the Atrioventricular valves close?

S1 Lub sound
CO2 travels in the blood by converting to ?
Bicarbonate
If a person is cold, what will the blood vessels in the dermis layer of their skin do to keep the heat in their body?
Vasodilate or Vasoconstrict
Vasoconstrict
They will close up to keep the heat of the subcutaneous/adipose layer in.
Stroke volume x heart rate is needed to calculate
Blood pressure or Cardiac Output?
Cardiac Output
Gas exchange of O2 and CO2 in the alveoli happens with what process?
Diffusion
What protein in the skin protects us from UV rays from the sun?
Melanin or Keratin
Melanin
What blood vessels supply the myocardium (Heart muscle) with oxygen rich blood? 
The left and right Coronary arteries.
Respiration of oxygen that gets up to the alveoli of the lungs is external or internal respiration?
External
Internal respiration is when O2 gets INTO the tissues/other organs. It is the same as perfusion.
When UV rays hit the epidermis, a provitamin gets converted to
Vitamin A or Vitamin D3?
Vitamin D3 or Vitamin D
Do the carotid arteries or jugular veins bring oxygenated blood to the brain and face?
Carotid arteries.