Respiratory System
Respiration begins here, where air first enters the body.
What are the nose and mouth?
This organ acts as the pump that keeps blood flowing through your body.
What is the heart?
These cells patrol the body and defend against disease-causing invaders.
What are white blood cells?
This outermost layer of skin covers the surfaces of the body.
What is the epidermis?
These cells are the basic unit of structure and function in the nervous system.
What are neurons?
This tube, also called the windpipe, carries air from the throat into the bronchi.
What is the trachea?
These vessels carry blood away from the heart, forming part of the system’s delivery network.
What are arteries?
These cells patrol the body and defend against disease-causing invaders.
What are white blood cells?
This inner layer of skin contains blood vessels, nerve cells, hair follicles, and glands.
What is the dermis?
These branch-like extensions receive impulses and deliver them to the cell body.
What are dendrites?
These tiny sacs at the end of bronchioles are where oxygen and carbon dioxide are exchanged.
What are alveoli?
These blood components defend the body against disease and are part of the immune response.
What are white blood cells?
This organ filters blood, removes old red blood cells, and helps fight infection.
What is the spleen?
This protein makes up hair, skin, and nails, giving them strength and structure.
What is keratin?
This extension of a neuron carries impulses away from the cell body.
What is an axon?
This muscle contracts and relaxes to enable breathing.
What is the diaphragm?
This fluid portion of blood transports nutrients, hormones, and waste throughout the body.
What is plasma?
These small structures along lymph vessels act as checkpoints, trapping pathogens.
What are lymph nodes?
These glands secrete an oily substance that keeps skin flexible and waterproof.
What are oil glands?
This system, made up of the brain and spinal cord, coordinates the body’s activities.
What is the central nervous system?
This system works with the circulatory system to deliver oxygen to cells and remove carbon dioxide.
What is the respiratory system’s connection to other systems?
This system works with nearly all other body systems by transporting oxygen and nutrients to every cell.
What is its connection to other systems?
This system (which is apart of the immune system) collects fluid lost from blood vessels and returns it to circulation.
What is the lymphatic system?
Beyond serving as a barrier, this system regulates body temperature through sweat and blood vessel dilation, while also protecting against ultraviolet radiation damage thanks to this pigment.
What is melanin?
This division of the nervous system carries messages between the central nervous system and the rest of the body, allowing coordination with systems like the muscular and digestive.
What is the peripheral nervous system.