Definition

1. Noun:
   • The bodily system responsible for circulating blood and lymph: The circulatory system is the network of organs and tissues that moves blood and lymph throughout the body, delivering nutrients and oxygen to cells and removing waste products.

Usage

• The term "circulatory system" is a singular, countable noun. It is typically used with the definite article "the" when referring to the system in general or a specific one.
• It functions as the subject or object in a sentence, often in scientific, medical, or educational contexts.

Examples

• Noun:
  • The human circulatory system consists of the heart, blood vessels, and blood.
  • A healthy diet and exercise are essential for maintaining a strong circulatory system.
  • The doctor explained how the disease affects the circulatory system.

Advanced Usage

• "Cardiovascular system": This is a closely related term often used interchangeably with "circulatory system," though it sometimes refers specifically to the heart and blood vessels (excluding the lymphatic system).
  • The lecture focused on diseases of the cardiovascular system.

Variants and Related Words

• Circulatory (adj): Relating to the circulation of blood or sap.
  • Circulatory problems can lead to serious health issues.
• Circulation (n): The movement of blood through the body, or the movement of something through a closed system.
  • Regular exercise improves blood circulation.

Synonyms

• Cardiovascular system: The system comprising the heart and blood vessels.
• Vascular system: A system of vessels for circulating fluids (can refer to blood or plant fluids).

Related Phrases

• Pulmonary circulation: The part of the circulatory system which carries deoxygenated blood away from the heart to the lungs and returns oxygenated blood back to the heart.
  • Pulmonary circulation is a crucial loop within the larger circulatory system.
• Systemic circulation: The part of the circulatory system that carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.
  • Systemic circulation delivers oxygen to all the body's tissues.

Noun

1. the organs and tissues involved in circulating blood and lymph through the body