Human Body Systems Study Guide

Front

What is the cardiovascular system?

Back

The cardiovascular system is a network of the heart and blood vessels that circulates blood throughout the body, delivering oxygen and nutrients to cells and removing waste products.

Front

How does the cardiovascular system maintain homeostasis?

Back

The cardiovascular system maintains homeostasis by regulating blood flow, blood pressure, and the distribution of nutrients and oxygen to meet the body's needs.

Front

What role does the digestive system play in nutrient absorption?

Back

The digestive system breaks down food into nutrients, which are then absorbed into the bloodstream through the walls of the small intestine.

Front

How do the respiratory and cardiovascular systems work together?

Back

The respiratory system brings oxygen into the lungs, where it diffuses into the bloodstream, while the cardiovascular system transports this oxygen to cells and carries carbon dioxide back to the lungs for exhalation.

Front

What is the function of capillaries in the cardiovascular system?

Back

Capillaries are tiny blood vessels that connect arteries and veins, allowing for the exchange of oxygen, nutrients, and waste products between blood and tissues.

Front

What is homeostasis?

Back

Homeostasis is the process by which the body maintains a stable internal environment despite changes in external conditions.

Front

What systems are involved in responding to a stimulus?

Back

The nervous, skeletal, muscular, respiratory, and cardiovascular systems all work together to respond to stimuli, such as danger.

Front

What is the role of the heart in the cardiovascular system?

Back

The heart pumps blood throughout the body, ensuring that oxygen and nutrients are delivered to cells and waste products are removed.

Front

How does blood circulate through the body?

Back

Blood circulates through the body in a loop: it is pumped from the heart to the body through arteries, returns to the heart through veins, and is then pumped to the lungs for oxygenation.

Front

What is the significance of oxygen in cellular respiration?

Back

Oxygen is essential for cellular respiration, a process that converts glucose into energy (ATP) for cells, while producing carbon dioxide as a waste product.