Human Digestive System Quiz

The digestive system is the organ system responsible for breaking down food, absorbing nutrients, and eliminating waste.

The gastrointestinal (GI) tract is a long, winding tube that runs from the mouth to the anus and is responsible for the physical and chemical breakdown of food.

The upper GI tract includes the mouth, pharynx, esophagus, and stomach. It's responsible for transporting food from the mouth to the stomach and starting the digestion process.

The lower GI tract (bowels) consists of the small and large intestines, rectum, and anus. It finishes digestion, absorbs nutrients, and eliminates waste.

The liver, gallbladder, and pancreas are accessory organs that help the digestive system function efficiently. They produce digestive juices, store bile, and regulate blood sugar levels.

The mouth, also known as the oral cavity, is the beginning of the digestive system and contains structures like the lips, palate, tongue, and teeth.

The lips surround the opening of the mouth and help hold food in place, assist with breathing and speaking, and express emotions.

The palate, which forms the roof of the mouth, has three parts: the hard palate, soft palate, and uvula. They help with chewing and swallowing.

Sensory receptors located on the tongue responsible for taste perception.

The band of tissue that connects the tongue to the floor of the mouth and limits its movement.

Structures surrounding, supporting, and attaching to teeth. Includes bone and soft tissues.

Specialized mucous membrane covering the bone of the dental arches and surrounding the teeth.

The upper jaw, comprised of bones from the lower surface of the skull. It's stationary.

The lower jaw, a separate bone. It's the only moving part of the jaw joint.

The joint formed at the back of the mouth where the maxillary and mandibular arches meet.

The natural teeth arranged in the upper and lower jaws. Includes four types: incisors, canines, premolars, and molars.

The hard, outer layer of a tooth that protects it from wear and tear.

The portion of the tooth that contains blood vessels and nerves.

The cementum is a layer of tissue that covers the root of the tooth, helping to anchor it to the jawbone.

The point where the crown and root meet is called the cervix. It's the transition zone between the visible part of the tooth and the part anchored to the jawbone.

The term occlusion refers to how the upper and lower teeth come together when you bite.

Saliva is a fluid produced by the salivary glands in your mouth. It helps to lubricate food, break down carbohydrates, and cleanse your teeth.

The parotid glands are located near your ears and produce saliva that helps with chewing and swallowing.

An orthodontist is a dentist who specializes in correcting misaligned teeth and jaws.

A dental specialist who prevents or treats disorders of the tissues surrounding teeth.

Gray-white pits with a red border in the soft tissues lining the mouth, often associated with stress, certain foods, or fever.

An abnormal, white, precancerous lesion that develops on the tongue or inside of the cheek.

Inflammation of the mucosa of the mouth.

Any disease of the mouth due to a fungus.

A type of stomatomycosis caused by overgrowth of the fungus Candida albicans, appearing as creamy white lesions on the tongue or inner cheeks, often seen in infants and immunocompromised individuals.

Any restriction to the opening of the mouth caused by trauma, surgery, or radiation related to oral cancer treatment, leading to difficulties with speaking, chewing, and swallowing.

Lack of adequate saliva due to diminished secretions by the salivary glands, often caused by medications or radiation.

A birth defect where the lip doesn't fully close during prenatal development, creating a groove running upward to the nose.

A birth defect where the palate, the roof of the mouth, doesn't fully close during fetal development.

Involuntary grinding or clenching of teeth, usually during sleep, often related to stress or tension.

An infectious disease caused by bacteria that destroy tooth enamel and dentin, leading to cavities.

Soft deposits that form near gums and between teeth, composed of bacteria and their byproducts. It's a major cause of dental caries and periodontal disease.

The state of being without natural teeth after they have been lost.

Any deviation from the normal alignment of upper and lower teeth, affecting bite and chewing.

The earliest stage of periodontal disease where inflammation affects only the gums.