Lecture 6 - Nervous System/Brachial Plexus

Question 1

Anatomical Organization of the Brain

Answer 1

Question 2

Afferent Pathway

Answer 2

Sensory information to the CNS

Question 3

Efferent Pathway

Answer 3

Motor information from the CNS

Question 4

How many nerves are in the PNS?

Answer 4

12 pairs of Cranial Nerves 31 pairs of Spinal Nerves

Question 5

Sympathetic System

Answer 5

In the ANS “Flight or Fight” aka Thoracolumbar

Question 6

Parasympathetic System

Answer 6

“Feed or Breed” / “Rest & Digest” aka Craniosacral

Question 7

Stages of Neural Tube Development

Answer 7

Question 8

Brain Development Stages

Answer 8

Question 9

Neural Tube Development

Answer 9

Question 10

Neural Tube Development

Answer 10

Question 11

Brain Development

Answer 11

Question 12

Spinal Cord Embryo Cross-Section

Answer 12

Question 13

Parts of a Neuron

Answer 13

Question 14

Neuron

Answer 14

Question 15

Structure of an Axon

Answer 15

Question 16

Axon

Answer 16

• Gives off endings called terinal boutons
• Terminal boutons contain synpatic vesicles of neurotransmitters
• Covered by neurolemma
• Only part of a neuron that is ever myelinated

Question 17

Neurolemma

Answer 17

• Covers the axon
• Made of Schwann cells (that form myelin)
• Often myelinated

Question 18

Axonal Transport

Answer 18

• Anterograde
• Retrograde
• Slow Transport
• Fast Transport

Question 19

Difference between Nucelus and Ganglion

Answer 19

• Both are an aggregation of dendrites and nerve cell bodies
• Nerves = CNS
• Ganglion = PNS

Question 20

Nerve vs. Tract

Answer 20

• Both are a bundle of fibers (axons)
• Nerve = PNS
• Tract = CNS

Question 21

Commissure

Answer 21

Tract in the CNS that crosses from one side to the other

Question 22

White matter

Answer 22

Areas of myelinated axons

Question 23

Grey Matter

Answer 23

Areas of unmyelinated axons, cell bodies, and dendrites

Question 24

Pathways

Answer 24

Question 25

Spinal Nerve Branches (5) And ANS Ganglion/Nerve (3)

Answer 25

Question 26

Reflex Arc (3) & Synapse

Answer 26

Question 27

Spinal Cord: Cross-Section

Answer 27

Question 28

Label the Vertebrae & Nerves

Answer 28

Question 29

Contents of the Axillary Sheath

Answer 29

Question 30

\*Brachial Plexus

Answer 30

1. Musculocutaneous Nerve 2. Axillary Nerve 3. Radial Nerve 4. Median Nerve 5. Ulnar Nerve 6. Thoracodorsal Nerve 7. Long Thoracic Nerve 8. Dorsal Scapular Nerve

Question 31

Divisions of Brachial Plexus: Anterior & Posterior Divisions

Answer 31