Abdomen Flashcards
What is the function of the celiac ganglia?
They are part of the lymphatic drainage system for the abdominal gastrointestinal tract and innervate structures.
List the three groups of preaortic lymph nodes involved in abdominal lymphatic drainage.
- Celiac group
- Superior mesenteric group
- Inferior mesenteric group
What structures does the celiac trunk drain lymph from?
It drains lymph from structures that are part of the anterior abdominal intestine.
What is the role of the superior mesenteric artery in lymphatic drainage?
It drains lymph from structures that are part of the middle abdominal intestine.
What does the inferior mesenteric artery drain?
It drains lymph from structures that are part of the posterior abdominal intestine.
Fill in the blank: The lymph from the celiac ganglia enters the _______.
cisterna chyli
True or False: The abdominal viscera receive only intrinsic innervation.
False
What components are involved in extrinsic innervation of the abdominal viscera?
It involves receiving motor impulses from the central nervous system and sending sensory information back.
What is the function of the enteric nervous system?
It regulates the activities of the digestive tract through a network of sensory and motor neurons.
Which abdominal organs receive extrinsic innervation?
- Abdominal gastrointestinal tract
- Spleen
- Pancreas
- Gallbladder
- Liver
What types of fibers are involved in the autonomic nervous system for abdominal viscera?
- Afferent visceral fibers
- Efferent visceral fibers
What structures serve as conduits for afferent and efferent fibers?
- Anterior and posterior roots of the spinal cord
- Spinal nerves
- White and gray communicating rami
- Sympathetic trunks
- Splanchnic nerves
- Prevertebral plexus
- Related ganglia
- Vagus nerves [X]
Fill in the blank: The enteric nervous system consists of _______ interconnecting plexuses in the walls of the gastrointestinal tract.
two
What functions do the neurons in the enteric nervous system control?
- Coordinated contraction and relaxation of smooth muscle
- Regulation of gastric secretion
- Regulation of blood flow
