week 11 part 2: short answers

There are ____ paired salivary glands that secrete saliva into the mouth.

3

The wall of the digestive tract is composed of four distinct layers.

The mucosal layer, the innermost layer, is comprised of epithelium, connective tissue, and a small amount of smooth muscle.

The digestive tract is a tube through which food and undigested residue pass on their way through the body. Numerous

accessory structures lie outside of the tract and thus are not structures that food will pass through, but rather contribute to digestion of food.

The wall of the digestive tract is composed of four distinct layers:

an inner mucosa, a submucosa, a muscular layer, and an outer serosa.

Each part of the GI tract plays a role in the mechanical and chemical digestion and

mechanical and chemical digestion and absorption of nutrients

The accessory organs of the digestive system function

to aid in the digestion of food

The digestive tract is a long tubular passageway through

the body that includes wider segments and narrower segments.

The digestive system is the largest internal organ system in the body. It consists of

an 8-meter-long alimentary canal and accessory organs.

produces 3-5% of saliva

sublingual gland

produces 60-70% of saliva

submandibular gland