Question

lo 6.1. what is the urinary bladder?
a type of muscle that pumps blood throughout the body.
a muscular sac that stores urine until it is excreted from the body.
a small gland that secretes hormones into the bloodstream.
a bone in the pelvis that supports the bladder.
a hollow tube that connects the kidneys to the bladder.

Explanation:

The urinary bladder is a part of the urinary system. Let's analyze each option:

• The heart is the muscle that pumps blood, not the bladder. So "A type of muscle that pumps blood throughout the body" is incorrect.
• The urinary bladder is a muscular sac. Its main function is to store urine until it is excreted from the body. This matches the description in "A muscular sac that stores urine until it is excreted from the body".
• Glands like the pituitary, thyroid etc. secrete hormones. The bladder is not a gland. So "A small gland that secretes hormones into the bloodstream" is wrong.
• The bladder is an organ, not a bone. "A bone in the pelvis that supports the bladder" is incorrect.
• The ureters are the hollow tubes that connect the kidneys to the bladder. So "A hollow tube that connects the kidneys to the bladder" is for ureters, not the bladder.

Answer:

A muscular sac that stores urine until it is excreted from the body.