Lab Questions

Question 1

The semilunar valves of the mammalian heart

Answer 1

Prevents back flow of blood in the aorta and pulmonary arteries

Question 2

The set of blood vessels that allows for gas exchange with the slowest velocity of blood

Answer 2

Veins

Question 3

In mammals most gas exchange between the atmosphere and the pulmonary occurs in the

Answer 3

Alveoli

Question 4

Tissues are composed of cells and tissues functioning together makeup

Answer 4

Organs

Question 5

The epiglottis of a human covers the glottis when he/she is

Answer 5

Swallowing

Question 6

Stratified cuboidal epithelium is composed of

Answer 6

Several layers of boxlike cells

Question 7

Impairment of a mammals breathing cycle is most likely following neural damage in

Answer 7

The medulla oblong and the pons

Question 8

Certain nutrients are considered “essential” in the diets of some animals because

Answer 8

These animals are not able to make these nutrients

Question 9

The fat soluble in vitamins include

Answer 9

Vitamin A

Question 10

Ingested dietary substance must cross cell membranes to be used by the body, a process known as

Answer 10

Absorption

Question 11

After ingestion by humans the first category of macromolecules to be chemically digested by enzymes in the mouth

Answer 11

Carbohydrates

Question 12

Digestive secretions with a pH of 2 are characteristic of the

Answer 12

Stomach

Question 13

Pepsin is a digestive enzyme that

Answer 13

Manufactured by the pancreas

Question 14

The bile salts

Answer 14

Emutsify fats in the duodenum

Question 15

Materials are returned to the blood from the filtrate by which of the following process

Answer 15

Reabsorption

Question 16

The filtrate in the proximal convoluted tubule of the human does not normally include

Answer 16

Plasma proteins

Question 17

After blood flow is artificially reduced at one kidney, you would expect that kidney to secrete more of the hormone known as

Answer 17

Cortisol

Question 18

Increased ADH secretion is likely after

Answer 18

Sweating included dehydration increases plasma osmolartity

Question 19

In animals, nitrogenous wastes are produced mostly from the catabolism of

Answer 19

Phospholipids and glycolipids

Question 20

What is an ulcer and how it develop

Answer 20

Ulcer: open sore either internal or external

Develop: break in skin or mucus membrane that failed to heal

Question 21

Explain the flow of blood through the heart

Answer 21

Vena cava ~ right atrium ~ av node~ right ventricle ~ pulmonary valve ~. pulmonary artery ~ pulmonary vein ~ left atrium ~ left ventricle ~ aorta

Question 22

Air bubble to the alveoli

Answer 22

Nasal cavity ~ pharynx ~ larynx ~ trachea ~ bronchi ~ bronchioles ~ alveoli

Question 23

Which pairs of mammalian blood vessels has blood that is least similar in its gas content

Answer 23

Pulmonary and jugular veins

Question 24

How each wave of the EKG correlates with electrical activity of the heart

Answer 24

It would show a normal heart rhythm recording. The signals goes to the heart ventricles.

Question 25

Explain how you would conduct a urinalysis and list 3 substances you would test for

Answer 25

Urine ~ dip strip ~ strip change color ~ results of color ~ trst for abnormalities

Blood, proteins, sediments