THRC.9

Question 1

Neurons of the sympathetic system

Answer 1

Preganglionic neurons

Question 2

After entering the sympathetic trunk, give the fate of the preganglionic neurons

Answer 2

• Synapse with the local ganglion
• Run cranially/caudally to a vertebral ganglion
• Splanchnic nerves

Question 3

Give the divisions of truncus sympaticus

Answer 3

• Cephalic part
• Cervical part
• Thoracic part
• Abdominal part
• Sacral part
• Coccygeal part

Question 4

Which system is the sympathetic system part of?

Answer 4

Autonomic nervous system

Question 5

In the spinal cord: Sympathetic neurons communicate with peripheral sympathetic neurons via…

Answer 5

Sympathetic ganglia

Question 6

Give examples of sympathetic effects

Answer 6

• Pupil dilation
• Increased heart rate
• Increased blood pressure

Question 7

Preganglionic neurons span which region of the spinal cord?

Answer 7

Th₁ - L₃

Question 8

Answer 8

Cranial cervical ganglion

Question 9

Answer 9

Cervical part of the sympathetic trunk

Question 10

Answer 10

Stellate/cervicothoracic ganglion

• Medial to R₁
• Marks the end of the cervical sympathetic trunk
• Fusion of caudal cervical and cranial thoracic ganglia

Question 11

Answer 11

Middle cervical ganglion

Question 12

Answer 12

Cervical cardiac nerve

Question 13

Answer 13

Sympathetic trunk

Question 14

Answer 14

Vertebral nerve

Question 15

Answer 15

Greater splanchnic nerve

Question 16

Answer 16

• Solar plexus
  
  • Celiac ganglion
  • Cranial mesenteric ganglion

Question 17

Answer 17

Lesser splanchnic nerve

Question 18

Answer 18

Lumbar splanchnic nerves

Question 19

Answer 19

Caudal mesenteric ganglion

Question 20

Answer 20

Sacral splanchnic nerves

Question 21

Answer 21

Hypogastric nerve

Question 22

Answer 22

Pelvic ganglia

Question 23

What is shown?

Answer 23

Sacral + coccygeal part of sympathetic trunk (Cat)

Question 24

Answer 24

Last lumbar vertebral ganglion

Question 25

Answer 25

Vertebral ganglion ## Footnote *on level with S₁*

Question 26

Answer 26

Right sympathetic trunk

Question 27

Answer 27

Coccygeal ganglion (fused)

Question 28

Answer 28

Sympathetic trunk

Question 29

Answer 29

Middle cervical ganglion

Question 30

Answer 30

Vertebral nerve

Question 31

1

Answer 31

Cranial cervical ganglion

Question 32

2

Answer 32

Stellate/cervicothoracic ganglion

Question 33

3

Answer 33

Ansa subclavia * Between middle cervical and stellate ganglion

Question 34

At what point does the sympathetic trunk separate from the vagus nerve?

Answer 34

At the atlas * Terminating into the cranial cervical ganglion

Question 35

Function of cranial cervical ganglion

Answer 35

Sympathetic innervation for the head

Question 36

Path of the internal carotid nerve

Answer 36

Cranial cervical ganglion → Innervates blood vessels in the cranium * Travels through the for. lacerum

Question 37

Branches of the stellate ganglion

Answer 37

* Communicating branches * Vertebral nerve * Cervical cardiac nerves * Perivascular branches * Thoracic part of sympathetic trunk

Question 38

The splanchnic nerves connect...

Answer 38

The prevertebral ganglia

Question 39

Hypogastric nerves pass from the

Answer 39

Caudal mesenteric ganglion

Question 40

Answer 40

Cranial cervical ganglion