Body System Basics Quiz: Test!

The correct answer is heart because the cardiac muscle is specifically found in the heart. The heart is a vital organ that pumps blood throughout the body, and its contraction and relaxation are controlled by the cardiac muscle. The liver, alveoli, and large intestine do not contain cardiac muscle and therefore are not the correct answers.

The alveoli are indeed tiny air sacs inside of the lungs. These sacs are responsible for the exchange of oxygen and carbon dioxide between the lungs and the bloodstream. They have thin walls and are surrounded by capillaries, allowing for efficient gas exchange.

The esophagus is a tube that connects the throat to the stomach. It is responsible for transporting food and liquids from the mouth to the stomach for digestion.

The liver plays a crucial role in processing drugs, alcohol, and other chemicals in the body. It metabolizes and detoxifies these substances, breaking them down into less harmful components that can be eliminated from the body. Without the liver's involvement, these substances would accumulate and cause harm to the body. Therefore, the statement that the liver does not help in the process of taking care of drugs, alcohol, and other chemicals is false.

The trachea is the tube in the respiratory system that carries air from the throat to the bronchi. It is commonly known as the windpipe. The trachea is made up of cartilage rings that help keep it open and prevent it from collapsing. It is lined with tiny hair-like structures called cilia that help to trap and remove any foreign particles or mucus from the air before it reaches the lungs. The trachea plays a vital role in the process of respiration by allowing the passage of air into the lungs.

The statement is false because veins carry blood TO the heart from the rest of the body, not from the heart to the rest of the body. The heart pumps oxygenated blood to the body through arteries, and the deoxygenated blood returns to the heart through veins.

Capillaries are the smallest blood vessels in the circulatory system that connect the arteries and veins. They are responsible for the exchange of oxygen, nutrients, and waste products between the blood and the surrounding tissues. Capillaries have thin walls which allow for the diffusion of substances, making them ideal for this exchange. They are found throughout the body, forming an extensive network that ensures every cell receives the necessary nutrients and oxygen while removing waste products.

The colon is responsible for transporting food waste out of the body. It is part of the digestive system and plays a crucial role in the final stages of digestion. The colon absorbs water and electrolytes from the remaining food matter, forming solid waste or stool. The stool is then transported through the colon and eventually eliminated from the body through the rectum and anus.