The esophagus is a muscular tube through which food passes from the mouth (pharynx) to the stomach. The muscular layer of the esophagus wall is composed of skeletal muscle in the upper part, smooth muscle in the lower part, and a mixture of the two in the middle.
The tongue is a moveable muscular process in the mouth that manipulates food for mastication and is used in the act of swallowing. The tongue’s upper surface is covered by taste buds housed in numerous papillae.
The hard palate is a thin horizontal bony plate located in the roof of the mouth that separates the oral and nasal cavities.
The esophagus is a muscular tube through which food passes from the mouth (pharynx) to the stomach. The muscular layer of the esophagus wall is composed of skeletal muscle in the upper part, smooth muscle in the lower part, and a mixture of the two in the middle.
The tongue is a moveable muscular process in the mouth that manipulates food for mastication and is used in the act of swallowing. The tongue’s upper surface is covered by taste buds housed in numerous papillae.
The hard palate is a thin horizontal bony plate located in the roof of the mouth that separates the oral and nasal cavities.
Source: https://histologyguide.com//slidebox/14-gastrointestinal-tract.html