30 Questions
Which hormone is responsible for the release of a mature egg in the ovaries?
LH
Which gland is responsible for the production of adrenaline and noradrenaline?
Adrenal gland
Which hormone regulates the secretion of insulin and glucagon?
Somatostatin
Which gland is responsible for metabolism regulation?
Thyroid gland
Which gland is the primary organ of the lymphatic system?
Thymus gland
Calcitonin is produced in which cells of the thyroid?
Follicular cells
What is the function of calcitonin?
Reducing blood calcium levels
How does calcitonin work in relation to parathyroid hormone?
They have opposite functions
What is the target tissue of calcitonin?
Bone
Parathyroid hormone increases the reabsorption of calcium from urine back into the blood and increases the absorption of calcium from food in the gastrointestinal tract. What is the target tissue of PTH?
Bone
Which type of immunity is characterized by the production of antibodies in response to harmful agents?
Humoral immunity
Which type of T cell directly attacks infected cells?
Killer T cell
What is the main function of lymph nodes?
Mechanical filtration
Which type of immunity is the initial response by the body to eliminate microbes and prevent infection?
Innate immunity
What are the inflammatory mediators that attract other white blood cells to the area called?
Leukotrienes
Which phase of the cardiac cycle occurs immediately after the closure of the SL valves?
Isovolumetric Ventricular Relaxation
What is the role of the baroreceptors in the autonomic nervous system?
To regulate blood pressure
What is the formula for calculating cardiac output?
Cardiac output = stroke volume x heart rate
According to Starling's Law of the heart, what affects stroke volume?
The length or stretch of heart fibers at the beginning of contraction
What is the outermost layer of the heart wall called?
Epicardium
Which type of leukocyte accounts for 25% of white blood cells and is the smallest in size?
Lymphocytes
What is the function of neutrophils?
Phagocytosis
Which protein, made in the liver, is the most abundant circulating protein found in the plasma and helps maintain osmotic pressure?
Albumin
What is the process called when blood cells pass through capillary walls into the tissue, typically accompanying inflammation?
Diapedesis
What is the function of thrombocytes (platelets)?
Assist in blood clotting
Which layer of the blood vessels contains smooth muscle tissue?
Tunica media
Which wave in an ECG represents the depolarization of the ventricles?
QRS complex
What is the purpose of the hepatic portal vein?
To filter the blood before it reaches the inferior vena cava
What is peripheral resistance?
The resistance to blood flow imposed by the force of friction between blood and the walls of its vessels
Which type of lymphocyte is responsible for antibody mediated immunity?
B cells
Test your knowledge on the phases of the cardiac cycle and their importance in measuring blood flow, pressure changes, and volume. This quiz will cover the five steps involved in this crucial cardiovascular process.
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