The colloid osmotic pressure in the human blood is largely due to:
1. | electrolytes | 2. | albumin |
3. | fibrinogen | 4. | globulins |
QRS complexes on the ECG tracings show that:
1. The atria are depolarizing.
2. The ventricles are depolarizing.
3. The ventricles are repolarizing.
4. The heart is at rest.
The aortic semilunar valve prevents blood from returning to the _____.
1. | left ventricle | 2. | aorta |
3. | right ventricle | 4. | left atrium |
Pulmonary veins return the oxygenated blood from the lungs to:
1. | right atrium | 2. | left atrium |
3. | right ventricle | 4. | left ventricle |
Erythrocytes in humans are destroyed mainly in:
1. | liver and spleen | 2. | heart and lungs |
3. | bone marrow | 4. | kidney |
The most common WBC under normal physiological conditions are:
1. Neutrophils | 2. Macrophages |
3. Monocytes | 4. Lymphocytes |
In a normal ECG, The T wave represents:
1. | ventricular depolarization | 2. | atrial repolarization |
3. | ventricular repolarization | 4. | atrial depolarization |
The chamber with the thickest musculature in the human heart would be:
1. the right atrium | 2. the left atrium |
3. the left ventricle | 4. the right ventricle |
The correct path of circulation of the blood in the human heart is represented by:
1. | left atrium, left ventricle, lungs, right atrium, right ventricle, body |
2. | right atrium, right ventricle, lungs, left atrium, left ventricle, body |
3. | left atrium, left ventricle, right atrium, right ventricle, lungs, body |
4. | right atrium, lungs, right ventricle, left atrium, body, left ventricle |
Sympathetic stimulation would lead to:
1. increased heart rate.
2. increased stroke volume.
3. vasoconstriction in visceral blood vessels.
4. all of the above.