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
