Physiology

Py1a. no title, the unit used for Epinephrine Concentration is wrong; shouldn’t be M, but Mg, no legend, the Epinephrine Concentration unit numbers should start with 0 from the left to right, Epinephrine Concentration wasn’t administered at 250 mg

c. Based on the new figure, I can conclude that an increase in epinephrine increases heart rate.

2. organ systems involved-respiratory: breathing rate increases to ensure more oxygen is taken in, cardiovascular: heart rate increases to ensure more blood is available to all working muscles & other tissues; this helps in getting more oxygen & nutrients for energy, muscular: contracting and relaxing increases to cause movements in the joints; in this process energy is spent

This person’s body would be under sympathetic innervation.

3.) The property of diffusion that best helps explain the necessity of the circulatory system in multicellular organisms is that diffusion is rapid over short distances, but much slower over longer distances. The fact that diffusion is extremely slow over long distances make a circulatory system necessary.

4.) Runner’s trot can be caused at high intensity by your gut’s nervous system reacting to lactate. Running jostles the intestines, reduces blood flow to the intestines as the body sends more blood to the exercising muscles. Running lowers blood sugar levels & causes dehydration, which may aggravate the condition. When deprived of oxygen, the lining of the intestine can become irritated & produce symptoms associated with runner’s trot.

5.) Cholesterol is a steroid that serves as the basis for steroid hormones; also a key component of membranes to form a lipid bilayer that function as a selective barrier b/w cytosol & the external environment. It aids in producing bile & is important for metabolism of fat soluble vitamins.

LDL is sometimes called “bad” cholesterol because high levels of it are associated with coronary heart disease & HDL is...