The cartilage epiglottis flaps at the throat's larynx opening.
Its main job is to keep food and liquids out of the trachea and lungs when we swallow.
Big intestine cells create mucus to help feces travel through the digestive tract.
It helps keep stool moving smoothly and protects the gut lining.
The cardiac conduction system, a network of specialized cardiac muscle cells, generates and coordinates electrical signals that start and regulate the heartbeat.
These specialized cells spontaneously create electrical impulses, allowing the heart to contract rhythmically without nerve impulses.
yes you are correct both answers are correct
The mouth, nose, and throat comprise the upper respiratory system.
The muscular pharynx connects the nasal and oral cavities to the larynx and esophagus. It transports air and food.
The skull protects the brain and eyes, its main function.
The brain controls many biological systems, ideas, emotions, and sensory perception, making it a vital organ. Vision, necessary for human experience and interaction with the world, requires the eyes.
Long bones are extended and longer than wide.
These bones in the limbs support body weight, move, and produce blood cells.
