Ch. 15.3- Parasympathetic division

Question 1

Terminal Ganglia

Answer 1

Located close toed effector

Question 2

Intramurmal ganglia

Answer 2

Located within the walls of the target organ.

Question 3

Oculomotor nerve (CN III)

Answer 3

Origin: Midbrain
Autonomic ganglia: Ciliary Ganglion
Effectors innervated: Eye- ciliary muscles to alter the shape of lens.
Iris- sphincter pupillae muscle- to constrict the pupil

Question 4

Facial nerve (CN VII)

Answer 4

Origin: Pons
Autonomic ganglia: Pterygopalatine ganglion- lacrimal glands, glands of nasal cavity, palate, and oral cavity.
Submandimbular ganglion- submandibular and sublingual salivary glands

Question 5

Glossopharyngeal (CN IX)

Answer 5

Origin: Medulla oblongata
Autonomic ganglia: Otic nerve
Effectors innervated: Porotid salivary glands.

Question 6

Vagus Nerve (CN X)

Answer 6

Origin: Medulla Oblongata
Autonomic ganglia: terminal and intramural ganglia.
Effector innervated: Thoracic viscera and most abdominal viscera.

Question 7

Pelvic Splanchic Neve

Answer 7

Origin: S2-S4 segment of spinal cord.
Autonomic ganglia: Terminal and intramural ganglia
Effector innervated: Some abdominal viscera and most pelvic viscera. Namely heart, bronchi, bronchioles, GI tract, and liver.

Question 8

What does the vagus nerve do to the organs it innervates?

Answer 8

Heart- decreases heart rate
Bronchi/bronchioles- constricts to decrease airflow into the alveoli
GI tract- stimulates secretion released from the tract walls, increases motility, and relaxes sphincters.
Liver- stimulates glycogenesis.