MCQ Bank
During physical activity, which medical condition causes an extreme spike in blood pressure?
- A) exercise hypertension
- B) all of these
- C) Anemia
- D) Hypothyroidism
What is the term for the relaxation phase of the cardiac cycle?
- A) Systole
- B) Ejection
- C) Diastole
- D) Contraction
………………. Convert hemoglobin to methemoglobin?
- A) Potassium dihydrogen phosphate
- B) potassium cyanide
- C) Potassium ferricyanide
- D) Non-ionic detergent
People with exercise hypertension can experience spikes in systolic blood pressure up to............. mm Hg during exercise.
- A) 240
- B) 230
- C) 280
- D) 250
The electrical impulses that regulate the heartbeat originate in the
- A) Sinoatrial (SA) node
- B) Left ventricle
- C) Aorta
- D) Pulmonary artery
The risk of a heart problem increases if the systolic pressure rises beyond what level?
- A) 230 mm Hg
- B) 240 mm Hg
- C) 220 mm Hg
- D) 250 mm Hg
It’s normal for systolic blood pressure to rise to between ..... and ........mm Hg during exercise.
- A) 120, 140
- B) 180, 200
- C) 140, 180
- D) 160 , 220
Out of 25, how many medium squares are used to count RBCs in the hemocytometer?
- A) 5
- B) 4
- C) 3
- D) 7
What should be done if the cells touch the 4 perimeter sides of a corner square?
- A) Ignore those cells
- B) Count all cells
- C) Counts cells on 3 sides.
- D) Count cells on 2 sides
What is the location of the pacemaker region in the heart of frog and turtle?
- A) Purkinje fibers
- B) Atrioventricular (AV) node
- C) Bundle of His
- D) sinus venous
Kymograph was invented by German physiologist Carl Ludwig in.........
- A) 1870s
- B) 1940s
- C) 1970s
- D) 1840s
In the calculation of RBC count, 0.1 represents
- A) Number of cells
- B) volume
- C) dilution factor
- D) Number of squars
Red blood cells are also called
- A) platelets
- B) monocytes
- C) hemocytes
- D) erythrocytes
Which of the following objective lens is used to observe a large central square in the hemocytometer?
- A) 10X
- B) 100X
- C) 40X
- D) all of above
What is the primary function of the heart?
- A) excretion
- B) filtration
- C) oxygentaion
- D) digestion
Which chamber of the heart pumps oxygenated blood to the body?
- A) Right ventricle
- B) Left atrium
- C) Right atrium
- D) Left ventricle
Which of the following is the iron-containing molecule within red blood cells that binds to oxygen?
- A) plasma
- B) Hemoglobin
- C) albumin
- D) fibrinogen
Which of the following factors can contribute to high blood pressure?
- A) Adequate sleep
- B) Regular exercise
- C) Obesity
- D) Low sodium intake
The cells responsible for spontaneous action potential production in the heart are often referred to as
- A) Nephron cells
- B) nerve sells
- C) stem cells
- D) pacemaker cells
What is the first step in nerve-muscle preparation nerve-muscle?
- A) pithing the toad
- B) Fixing the toad on the frog board
- C) Identification of the gastrocnemius muscle
- D) peeling off the skin