Exam 4

Gas exchange takes place across the

1.alveolar epithelium. 2.capillary endothelium. 3.basement membrane.

The following is a list of vessels and structures that are associated with the heart . 1. right atrium 2. left atrium 3. right ventricle 4. left ventricle 5. vena cavae 6. aorta 7. pulmonary trunk 8. pulmonary veins What is the correct order for the flow of blood entering from the systemic circulation?

5, 1, 3, 7, 8, 2, 4, 6

Alveolar capillaries release _____ resulting in the production of angiotensin II

ACE

Bill wants to determine his blood type, so he takes a few drops of blood from a puncture wound in his finger and mixes it with various antisera. His blood cells agglutinate when mixed with the anti-A serum and anti-Rh serum, but not with the anti-B serum. This means

Bill's plasma contains anti-B antibodies.

Difference between plasma and serum

Clotting

Which of the following statements is true regarding internal respiration?

Diffusion between the systemic capillaries and interstitial fluid decreases the pO2 of blood and increases its pCO2.

________ directly stimulates red blood cell production.

EPO

________ are the most abundant cell population of the formed elements of blood.

Erythrocytes

Which of the following is NOT correctly matched?

Globulin - can act as hormones

Blood in the veins of the pulmonary circuit has a relatively high partial pressure of _____ and relatively low partial pressure of _____.

O2 ; CO2

Blood returning directly from the systemic circulation enters the

Right atrium

The cardiac pacemaker cells are located in which of the following?

SA Node

The term ________ refers to the combination of plasma and the formed elements together

Whole Blood

The semilunar valve of the left side of the heart prevents backflow from the

aorta

How is the majority of carbon dioxide carried in the blood?

as bicarbonate in the plasma

Where does the conducting portion of the respiratory system begin?

at the entrance to the nasal cavity

the bicuspid is located

between left atrium and left ventricle

The tricuspid valve is located

between right atrium and right ventricle

The function of hemoglobin is to

bind and transport oxygen and carbon dioxide.

An individual has O+ blood. What antigens and antibodies will he have in blood?

both anti-A and anti-B antibodies

The vessels that permit exchange of materials between the blood and the surrounding interstitial fluid are called

capillaries

he first heart sound ("lubb") is produced as the atrioventricular valves ________ and the semilunar valves ________.

close; open

Relaxation of the heart chambers is called

diastole.

At which point does thoracic cavity volume decrease and pressure inside rise?

during exhalation

Thick-walled vessels, which are large and extremely resilient, are called ________ arteries.

elastic

The innermost layer of the heart wall is the

endocardium

A hemoglobin molecule contains

four protein chains, four heme groups, and four iron ions.

The primary function of white blood cells is to

help defend the body against pathogens

Blood from the viscera and the lower limbs is conducted to the heart through which vessel?

inferior vena cava

Which muscles act to lower the rib cage?

internal intercostals and rectus abdominis

Which condition results from abnormally high levels of bilirubin in the plasma of blood?

jaundice

Which are the primary cells of the lymphatic system?

lymphocytes

Which of the following do NOT develop from myeloid stem cells?

lymphocytes

Which of the following is an agranulocyte?

monocyte

The muscle layer of the heart is the

myocardium

Through which parts of the pharynx do food and drink normally pass during ingestion?

oropharynx and laryngopharynx only

A foreign microorganism that may cause disease in humans is called a(n)

pathogen

The heart is surrounded by the

pericardial cavity

The thymus gland is positioned

posterior to the sternum

A person's blood type is determined by the

presence or absence of specific surface antigens on the plasma membrane.

The right ventricle pumps blood to the

pulmonary trunk to the lungs

The amount of air that remains in the lungs after a maximal exhalation is the

residual volume.

________ are large lymphoid nodules that are located in the walls of the pharynx.

tonsils

The muscular layer of blood vessels is the

tunica media