Place the following in order as blood flows through the heart:
a. Bicuspud Valve
b. Pulmonary Artery
c. Puloitary Artery
d. Left Ventricle
e. Aorta
f. Right Atrium
g. Pulmonary Semilunar Valve h. Right Ventricle
i. Superior/Inferior Vena Cava j. Tricuspid Valve
1. Pulmonary Vein
m. Aortic Semilunar Valve n. Body
o. Left Atrium
k. Lungs

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.