Exam: IELTS

Definition: A medical professional who operates a machine that takes over the functions of the heart and lungs during surgery, ensuring that blood is oxygenated and circulated properly.

Example: The perfusionist carefully monitored the heart-lung machine during the surgery to ensure the patient received adequate blood flow.

Definition: This word is used to express uncertainty or possibility about something.

Example: Perhaps we can go to the park tomorrow if the weather is nice.

Definition: A possibility or uncertainty about something.

Example: There is a chance of rain tomorrow, but it's just a perhaps.

Definition: Relating to the membrane that surrounds the heart.

Example: The doctor explained that the pericardial fluid helps protect the heart.

Definition: A protective membrane that surrounds the heart and contains fluid to reduce friction during heartbeats.

Example: The doctor explained that the pericardium helps protect the heart from injury.

Definition: The outer layer or wall of a fruit that develops from the ovary of a flower, often protecting the seeds inside.

Example: The pericarp of the apple is thick and fleshy, making it a popular fruit.

Definition: Relating to the fibrous tissue that surrounds cartilage, except at the joints.

Example: The perichondral layer plays an important role in the growth and repair of cartilage.

Definition: A layer of connective tissue that surrounds cartilage, providing support and nourishment, except at the joints.

Example: The perichondrium plays a crucial role in the growth and repair of cartilage.

Definition: Relating to the membrane that covers the skull.

Example: The doctor examined the pericranial area for any signs of injury.

Definition: The outer layer of tissue that covers the surface of the skull.

Example: The surgeon carefully examined the pericranium before proceeding with the operation.

Definition: The location in a planet's or other celestial body's orbit where it is closest to the sun.

Example: Earth reaches its perihelion in early January each year.