Alimentary Canal Wall Flashcards
1
Q
Mucosa
A
- innermost mucous membrane layer
- produces and releases secretions needed for digestion
- lymphoid tissue protects the body
- lubricate + release mucus
2
Q
Submucosa
A
- connective tissue
- contains blood vessels, lymphatic vessels, nerves, and lymphoid tissue
3
Q
Muscularis externa
A
- two layers of smooth muscles (longitudinal muscle and circular muscle)
- responsible for GI motility
4
Q
Serosa
A
- connective tissue
- outer cover that protects the GI tract
5
Q
Order
A
Innermost = lumen
mucosa
submucosa
muscularis externa
serosa