Module 15-16

Question 1

There is a reserve of oxygen in the muscles held by ______

Answer 1

Myoglobin

Question 2

The atrioventricular node fires after the senatorial node

Answer 2

True

Question 3

Tidal breathing causes the incoming air to mix with some older air in the lungs

Answer 3

True

Question 4

The slow flow of blood in capillaries facilitates the release of oxygen

Answer 4

True

Question 5

When the systole occurs the ventricle is contracting

Answer 5

True

Question 6

The inspiratory and the expiratory reserves make up the total volume in the lungs

Answer 6

False

Question 7

Red blood cells carry CO2 back to the lungs

Answer 7

False

Question 8

To prevent back flow of blood in the heart there are…

Answer 8

Valves

Question 9

The blood flow slows down in the capillaries because the increased total area of the capillary is very large

Answer 9

True

Question 10

Surfactant is one of the later components made in the fetus (prior to birth)

Answer 10

True

Question 11

In capillaries the blood pressure pushes nutrients out of the capillaries towards the cells

Answer 11

True

Question 12

Oxygen is distributed throughout the body by:

Answer 12

The circulatory system

Question 13

Nutrients and oxygen can leave the arteries and arterioles to reach the cells

Answer 13

False

Question 14

The oxygen in the circulatory systems functions to bring oxygen to every cell of the body so it can make ATP

Answer 14

True

Question 15

Once inside the circulatory system _______ is the molecule that binds the oxygen

Answer 15

Hemoglobin

Question 16

When the diaphragm is relaxed it allows air to leave the lungs inducing the residual volume

Answer 16

False

Question 17

The two circuits in the heart and the cardiovascular system have the same blood pressure

Answer 17

False

Question 18

The slow flow of blood in the capillaries facilitates the production of bicarbonates in the blood

Answer 18

True

Question 19

Unlike other epithelia the epithelia that make up the capillaries have holes in them called frustrations

Answer 19

True

Question 20

When the ventricles contract blood is pushed out into the artery and the artery stretches because of its elastic layers allowing the blood to continue to flow into the circulatory system while the ventricle is relaxing

Answer 20

True

Question 21

The lungs have increased surface area to increase the movement of oxygen into the circulatory system

Answer 21

True

Question 22

Blood moves very rapidly in the capillaries

Answer 22

False

Question 23

The excretory system uses oxygen because oxygen diffuses more rapidly into the excretory system because it contains water in the urine

Answer 23

False

Question 24

The heart pace maker that triggers the two atria to contract is the ____________

Answer 24

sinoatrial node

Question 25

In mammals ventilation is tidal

Answer 25

True

Question 26

The partial pressure of oxygen in the lungs causes it to load into the circulatory system

Answer 26

True

Question 27

Veins and venules have valves in them, but arteries and arterioles do not

Answer 27

True

Question 28

The pulmonary artery contains oxygenated blood

Answer 28

False

Question 29

The left ventricle of the heart contains more muscle

Answer 29

True

Question 30

The functional unit of the kidney is the nephron

Answer 30

True

Question 31

The medulla of the kidney secretes epinephrine

Answer 31

False

Question 32

The bowman’s capsule is the beginning of the nephron

Answer 32

True

Question 33

Urine leaves our body through the urethra

Answer 33

True

Question 34

The kidney gets rid of toxic compounds

Answer 34

True

Question 35

Each kidney contains about one million nephrons

Answer 35

True

Question 36

Efferent arterioles enter the bowman’s capsule and efferent arterioles leave the bowman’s capsule

Answer 36

False

Question 37

In the proximal convoluted tubules useful molecules are collected and brought back into the circulatory system such as glucose and amino acids, but not the toxic materials

Answer 37

True

Question 38

The bowman’s capsule, the proximal convoluted tubules and the distal convoluted tubule are in the cortex of the kidney

Answer 38

True

Question 39

Blood pressure is the force that drives molecules out of the glomerulus into the bowman’s capsule

Answer 39

True

Question 40

Toxins including urea (in mammals) is driven out of the glomerulus into the bowman’s capsule

Answer 40

True

Question 41

The kidney controls the water balance in the body

Answer 41

True

Question 42

The inter-weaving of the circulatory system with the nephron is essential for the concentration of urea in the urine

Answer 42

True

Question 43

Blood pressure drives red blood cells and plasma proteins out of the glomerulus

Answer 43

False

Question 44

The kidney fillers about 180 liters of blood per day

Answer 44

True