Ch. 40-42 Wrap UpCh. 40-42 Wrap Up

• Do you know the importance of these vitamins? B1, folic acid, C, A, D Ch 41

• Do you know the importance of these minerals? Ca, P, S, K, Fe, I Ch 41

• Are you familiar with the insulin/glucagon feedback system? Ch 41

• What is in blood? Ch 42• What is the Bohr shift? Ch 42• How does the nervous system relate to the circulatory

and respiratory systems? Ch 42

Why do we eat?

• 1. Fuel for work

• 2. Raw materials for biosynthesis

• 3. Essential nutrients – (substances the body cannot make for itself) – There are four types of essential nutrients:

• amino acids(8), fatty acids, vitamins(13), minerals

8 Essential Amino Acids what does this mean?

• Minerals vs. Vitamins?

• Water soluble vs fat soluble

• Main minerals and their functions?– S P ONCH Ca K and (Fe, Mg, Na)

Homeostasis: Blood Glucose (0.1%)

PANCREAS: makes the hormones Insulin & Glucagon

Example: Negative Feedback loop to maintain homeostasis

Cellular elements of blood:

•Pluripotent stem cells

RBC production stimulated by:

Erythropoetin

• What is high altitude training?

CO2 + H20 = ??

Bohr Shift because of pH changes due to CO2

• How the Nervous system relates to the circu-latory and respiratory systems:

Diaphragm Muscles: negative pressure breathing

Counter current exchange

Counter current flow in fish gills

• Better O2 exchange efficiency

Ch 43

• LOOKING AHEAD TO NEXT WEEK:

• You should spend some quality timequality time with figure 43.14

Lab 10: Measuring cardiovascular fitness

• Systolic (large number)– (pump or SQUEEZE)

• Diastolic (small number)– (when heart momentarily relaxes)

• What is a pulse?• What is peripheral resistance? • How do the above relate to heart disease?

– Atherosclerosis, arteriosclerosis, heart attack, stroke