CPC Anatomy, Physiology & Medical Terminology 1 — Questions and Answers
Question 1: What is the function of the mitral valve in the heart?
- Pumps blood into the lungs.
- Controls flow from the right ventricle to the lungs.
- Prevents backflow into the left atrium. (Correct answer)
- Transfers oxygen to red blood cells.
Correct answer: Prevents backflow into the left atrium.
The mitral valve, also known as the bicuspid valve, is located between the left atrium and the left ventricle of the heart. Its primary function is to close during ventricular contraction (systole) to prevent oxygenated blood from flowing backward into the left atrium. This ensures efficient forward flow into the left ventricle and then to the aorta, maintaining proper circulation.
Question 2: Which body system includes the kidneys and bladder?
- Digestive system
- Endocrine system
- Respiratory system
- Urinary system (Correct answer)
Correct answer: Urinary system
The urinary system, also known as the renal system, is responsible for filtering blood and creating urine as a waste by-product. It includes the kidneys, which filter waste and excess water from the blood, and the bladder, which stores urine before it is expelled from the body. These organs work together to maintain fluid and electrolyte balance and eliminate metabolic waste.
Question 3: What does the medical prefix 'brady-' mean?
- Fast
- Slow (Correct answer)
- Large
- Small
Correct answer: Slow
The medical prefix 'brady-' is derived from Greek and consistently means 'slow.' It is commonly used in medical terminology to describe a condition or symptom characterized by slowness. Examples include 'bradycardia' (slow heart rate) or 'bradypnea' (slow breathing), indicating a rate that is below the normal range.
Question 4: What is the largest organ in the human body?
- Liver
- Brain
- Skin (Correct answer)
- Lungs
Correct answer: Skin
The skin is the largest organ in the human body by both surface area and weight, covering approximately 20 square feet in adults. It serves as a vital protective barrier against the environment, regulates body temperature, and prevents water loss. This extensive coverage and multiple functions solidify its status as the largest organ.
Question 5: Which plane divides the body into right and left halves?
- Transverse plane
- Coronal plane
- Sagittal plane (Correct answer)
- Horizontal plane
Correct answer: Sagittal plane
The sagittal plane is an anatomical plane that divides the body vertically into right and left sections. When this plane passes directly through the midline, dividing the body into equal right and left halves, it is specifically referred to as the midsagittal or median plane. This division is fundamental for describing the location of anatomical structures.
Question 6: What is the main function of red blood cells?
- Fight infections
- Clot blood
- Transport oxygen (Correct answer)
- Digest nutrients
Correct answer: Transport oxygen
Red blood cells contain a protein called hemoglobin, which is specialized to bind with oxygen. Their primary function is to transport oxygen from the lungs, where it is picked up, to all the tissues and organs throughout the body. This oxygen delivery is crucial for cellular respiration and the overall survival of the organism.
Question 7: Which term refers to inflammation of the liver?
- Nephritis
- Hepatitis (Correct answer)
- Gastritis
- Arthritis
Correct answer: Hepatitis
In medical terminology, the prefix 'hepat-' refers to the liver, and the suffix '-itis' denotes inflammation. Therefore, 'hepatitis' literally translates to inflammation of the liver. This condition can be caused by various factors, including viral infections, alcohol, or certain medications.
Question 8: What does the suffix '-ectomy' mean in medical terminology?
- Inflammation
- Incision
- Removal (Correct answer)
- Repair
Correct answer: Removal
The suffix '-ectomy' in medical terminology consistently indicates the surgical removal or excision of an organ or part of the body. For example, an appendectomy is the removal of the appendix, and a tonsillectomy is the removal of the tonsils. This suffix is essential for understanding surgical procedures.
Question 9: Which part of the brain is responsible for balance and coordination?
- Cerebrum
- Medulla oblongata
- Cerebellum (Correct answer)
- Thalamus
Correct answer: Cerebellum
The cerebellum, located at the back of the brain beneath the cerebrum, is primarily responsible for coordinating voluntary movements, maintaining balance, and regulating posture. It processes sensory information and integrates it with motor commands to ensure smooth, precise, and coordinated physical actions. Damage to the cerebellum often results in problems with balance and coordination.
CPC Anatomy, Physiology & Medical Terminology 1
What is the function of the mitral valve in the heart?