Which of the following has very thin walls and are supplied with blood capillaries?

Keep practicing — related questions

• The walls of alveoli are surrounded by
• Which of the following blood vessels are characterised by thick walls?
• Which of the following have thick elastic walls?
• The walls of alveoli are surrounded by _______.
• Which of the following vessels have the thickest wall?
• Which of the following organs is the thinnest?
• The lungs are covered by two thin membranes called _______.
• The trachea runs down the neck and are divided into two smaller tubes called _______.