Bio/Biochem 3

Question 1

What does aldosterone do to blood pressure?

Answer 1

Increase blood pressure

Question 2

How does aldosterone raise blood pressure?

Answer 2

^ Na+/H2O reabsorption

Question 3

What is reabsorption?

Answer 3

being reabsorbed into the blood. Is not excreted.

Question 4

When aldosterone is released where is na+ reabsorbed?

Answer 4

distal tubule

Question 5

What does ADH do to blood pressure?

Answer 5

increase bp

Question 6

How does ADH increase blood pressure?

Answer 6

allows more water to be reabsorbed

Question 7

What does ANP (atrial natriuretic peptide) hormone do?

Answer 7

Decreases blood pressure

Question 8

If you have high blood osmolality what hormone is released?

Answer 8

ADH

Question 9

What are the starling forces?

Answer 9

Hydrostatic pressure and osmotic pressure

Question 10

What pressure draws blood into the veins/arteries?

Answer 10

osmotic pressures

Question 11

What pressure pulls blood out of the arteries/veins?

Answer 11

hydrostatic pressure

Question 12

where does reabsorption occur?

Answer 12

vasa recta in the kidney

Question 13

What are the two layers of the kidney?

Answer 13

cortex (superficial) medulla (deep)

Question 14

What is a oncotic pressure?

Answer 14

osmotic pressure

Question 15

What kind of hormones are ADH and aldosterone?

Answer 15

ADH is peptide hormone Aldosterone is steroid hormone

Question 16

Where does most Na reasbsorption occur?

Answer 16

in the proximal convoluted tubule

Question 17

What are thick filaments in sarcomeres?

Answer 17

myosin

Question 18

What are the thin filaments in sarcomeres?

Answer 18

actin, troponin, tropomyosin

Question 19

What is the M line in a sarcomere?

Answer 19

The middle line of a sarcomere

Question 20

What is the Z line in a sarcomere?

Answer 20

Z is at the end,

Z is the ends of the sarcomere

Question 21

What is the H band in a sarcomere?

Answer 21

The thick (myosin) band

H is a thick letter

Question 22

What is the I band in a sarcomere?

Answer 22

Only the thin element (actin)

Because the letter I is thin

Question 23

What is the A band on the sarcomere?

Answer 23

ALL of the thick band, including the portion of the thin band.

Question 24

What is the sarcolemma??

Answer 24

The cell membrane layer of a myocyte

Question 25

What is the sarcoplasmic reticulum?

Answer 25

The ca++ storage unit

Question 26

What are the transverse tubules of a myocyte?

Answer 26

Carry action potentials from the sarcolemma to the sarcoplasmic reticulum

Question 27

what is the difference between a simple twitch and summation?

Answer 27

simple twitch is single cell, summation is repeated stimulus

Question 28

What is tetanus in muscle contraction?

Answer 28

constant smooth muscle contraction

Question 29

What does ATP do to myosin during contraction?

Answer 29

It release myosin from actin.

Question 30

What does erythropoietin do?

Answer 30

Increases the amount of RBC's

Question 31

Where does normal gut "flora" reside?

Answer 31

The cecum

Question 32

How would you perform a test cross (two ways) to determine if a genotype was AA or Aa?

Answer 32

1. mate with aa (homo recessive) 2. mate with Aa (hetero)

Question 33

What is a constitutional isomer?

Answer 33

This with the same makeup but bonds in different spots

Question 34

What is a diastereomer?

Answer 34

2 compounds with atleast 1 chiral center the same, and 1 chiral center different

Question 35

What is an anomer?

Answer 35

A sugar that chiral centers at the anomeric spot is different