How does the digestive system work in animals?
The digestive system uses mechanical and chemical methods to break food down into nutrient molecules that can be absorbed into the blood. Some animals use intracellular digestion, where food is taken into cells by phagocytosis with digestive enzymes being secreted into the phagocytic vesicles.
What is the function of the pharynx?
The pharynx, commonly called the throat, is a passageway that extends from the base of the skull to the level of the sixth cervical vertebra. It serves both the respiratory and digestive systems by receiving air from the nasal cavity and air, food, and water from the oral cavity.
What is the main function of the esophagus?
The esophagus functions primarily as a transport tube that directs the progression of food and fluids from the mouth to the stomach.
How does the pharynx work in the digestive system?
The pharynx, or throat, is the passageway leading from the mouth and nose to the esophagus and larynx. The pharynx permits the passage of swallowed solids and liquids into the esophagus, or gullet, and conducts air to and from the trachea, or windpipe, during respiration.
What are the three parts of the pharynx?
It contains three sections: the nasopharynx, oropharynx and laryngopharynx, which is also called the hypopharynx.
What is another name for pharynx?
What is another word for pharynx?
| throat | crop |
|---|---|
| neck | trachea |
| windpipe | fauces |
| oropharynx | gorget |
| larynx | passage |
Can food get stuck in the nasopharynx?
nose. … palate, extends back into the nasopharynx, the nasal portion of the throat, and during swallowing is pressed upward, thus closing off the nasopharynx so that food is not lodged in the back of the nose.
What are the three parts of the pharynx and their functions?
Anatomy of the Pharynx The pharynx is approximately 12.5 centimeters long and is divided into three parts. These parts include the nasopharynx, oropharynx, and laryngopharynx. The nasopharynx is the most superior, or uppermost, part of the pharynx that works with the nasal cavity during breathing.
What does the esophagus do in the digestive system?
The esophagus is the hollow tube that leads from the throat (pharynx) to the stomach. Food does not just fall through the esophagus into the stomach. The walls of the esophagus propel food to the stomach by rhythmic waves of muscular contractions called peristalsis.
What is the area behind the uvula called?
Oropharynx
What is the purpose of the tiny hairs called cilia in your nose?
Tiny hairs called cilia (SIL-ee-uh) protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.
How do you clean your upper respiratory tract?
Ways to clear the lungs
- Steam therapy. Steam therapy, or steam inhalation, involves inhaling water vapor to open the airways and help the lungs drain mucus.
- Controlled coughing.
- Drain mucus from the lungs.
- Exercise.
- Green tea.
- Anti-inflammatory foods.
- Chest percussion.
What purpose does mucus in the nasal cavity serve?
The respiratory system is lined with a mucous membrane that secretes mucus. The mucus traps smaller particles like pollen or smoke. Hairlike structures called cilia line the mucous membrane and move the particles trapped in the mucus out of the nose.
What are the three main functions of mucus in the nasal pathways?
MUCUS ACTS AS A BARRIER. Mucus traps inhaled particles (like dust, allergens, bacteria, or viruses) and keeps them from getting deeper into your lungs. Mucus also keeps them from invading the cells lining your airway and entering your system.
What is the difference between mucous and mucus?
Mucus is a clear, stringy fluid produced by mucous glands in tissues lining the nose, mouth and throat. Phlegm is a form of mucus produced by the lungs and lower respiratory tract. Phlegm indicates the presence of inflammation and irritation in the lungs and airways.
What cells are responsible for the production of mucus?
Mucus is secreted from two distinct areas within the lung tissue. In the surface epithelium, which is part of the tissue lining of the airways, there are mucus-producing cells called goblet cells. The connective tissue layer beneath the mucosal epithelium contains seromucous glands which also produce mucus.