Spine and Spinal Cord Structure

Question 1

Identify the Ventral and Dorsal sides of the Spinal Cord

Answer 1

Question 2

Identify the Lateral Columns of the Spinal Cord

Answer 2

Question 3

Identify the Ventral Columns of the Spinal Cord

Answer 3

Question 4

Identify the Tracts of Lissauer in the Spinal Cord

Answer 4

Question 5

Identify the Gracile and Cuneate Fasiculi/Columns in the Spinal Cord

Answer 5

Question 6

Identify the Grey Matter in the Spinal Cord

Answer 6

Question 7

Identify the Anterior White Commissure of the Spinal Cord

Answer 7

Question 8

Identify the Dorsal Root Ganglia in the Spinal Cord

Answer 8

Question 9

Identify the Ventral Roots of the Spinal Cord

Answer 9

Question 10

Identify Lamina 1 and 2 of the Spinal Cord

Answer 10

Question 11

Identify Lamina 3 and 4 of the Spinal Cord

Answer 11

Question 12

Identify Lamina 8 and 9 of the Spinal Cord

Answer 12

Question 13

What is the Approximate Diameter of the Spinal Cord?

Answer 13

1cm

Question 14

What is the Cervical Enlargement?

Answer 14

A widening of the spinal cord corresponding to nerves coming from the arms

Question 15

What is the Thoracolumbar Enlargement?

Answer 15

A widening of the spinal cord corresponding to nerves coming from the legs

Question 16

The Termination of the Spinal Cord is called the…

Answer 16

Conus Medullaris

Question 17

The Inner Most Spinal Meninx is called the…

Answer 17

Pia Mater

Question 18

The Middle Spinal Meninx is called the…

Answer 18

Arachnoid Mater

Question 19

The space between the Pia Mater and the Arachnoid Mater is filled with?

Answer 19

Cerebrospinal Fluid

Question 20

The Outermost Spinal Meninx is called the…

Answer 20

Dura Mater

Question 21

The Length of Connective Tissue that Anchors the Spinal Cord to the Coccyx is called the…

Answer 21

Filum Terminale

Question 22

How Long is the Filum Terminale Internum?

Answer 22

Approximately 15cm

Question 23

How Long is the Filum Terminale Externum?

Answer 23

Approximately 5cm

Question 24

Identify the Pathway of Proprioception in the Spinal Cord which does Not Involve Convergence

Answer 24

Question 25

Identify the **Pathway of** **Proprioception** in the **Spinal Cord** which **Involves** **Convergence**

Answer 25

Question 26

Where in the **Spinal Cord** do **Neuron Cell Surfaces** contain **Opioid Receptors**?

Answer 26

Question 27

Where in the **Spinal Cord** does **Decussation** occur in the **Spinothalmic Tract**?

Answer 27

Anterior White Commisure

Question 28

What is **Convergence**?

Answer 28

The outputing of hundreds of proprioception neurons onto a single neuron in laminas 3 and 4

Question 29

What is **Proprioception**

Answer 29

The sensing of touch, pressure and spatial awareness of limbs in relation to the body

Question 30

**Lamina 3 and 4** are collectively **Known As**...

Answer 30

The Nucleus Proprius

Question 31

In the **Homonculary Arranged Dorsal Columns**, neurons carrying signals from the **Lower Body** (Toes, Knees, Hip) are arranged in the ____ **Fasiculus**, while neurons carrying signals from the **Upper Body** (Fingers, Arms, Neck) are arranged in the ____ **Fasiculus**

Answer 31

In the **Homonculary Arranged Dorsal Columns**, neurons carrying signals from the **Lower Body** (Toes, Knees, Hip) are arranged in the **Gracile** **Fasiculus**, while neurons carrying signals from the **Upper Body** (Fingers, Arms, Neck) are arranged in the **Cuneate** **Fasiculus**

Question 32

The **Sensory** **Neurons** entering the **Dorsal Root Ganglion** are ___ **Neurons**?

Answer 32

The **Sensory** **Neurons** entering the **Dorsal Root Ganglion** are **Pseudounipolar** **Neurons**?

Question 33

**Meisner's Corpuscles** are ___ **Receptors**

Answer 33

**Meisner's Corpuscles** are **Touch** **Receptors**

Question 34

**Pacinian Corpuscles** are ___ **Receptors**

Answer 34

**Pacinian Corpuscles** are **Pressure****​ Receptors**

Question 35

Are **First Order Medial Lemniscal System Neurons** **Myelinated?**

Answer 35

Yes

Question 36

Are **First Order Spinothalmic Tract Neurons Myelinated?**

Answer 36

No

Question 37

**First Order Medial Lemniscus System Neurons** conduct signals at what **Speed**?

Answer 37

50m/s

Question 38

**First Order Spinothalmic Tract Neurons** conduct signals at what **Speed**?

Answer 38

1m/s

Question 39

**Proprioception Receptors and Nerves** are responsible for ___ **S****ensation**

Answer 39

**Proprioception Receptors and Nerves** are responsible for **Discriminative** **S****ensation**

Question 40

What is **Discriminative Sensation?**

Answer 40

Being able to tell two points of touch on the skin apart from each other

Question 41

Identify where the **Medial Lemniscus** is in the **Medial Lemniscus System**

Answer 41

Question 42

Identify where the **Cuneate** and **Gracile Nuclei** are in the **Medial Lemniscus System**

Answer 42

Question 43

Identify where the **Internal Arcuate Fibres** are in the **Medial Lemniscus System**

Answer 43

Question 44

Identify where the **First Order Neurons** are in the **Medial Lemniscus System**

Answer 44

Question 45

Identify where the **Second Order Neurons** are in the **Medial Lemniscus System**

Answer 45

Question 46

Identify where the **Third Order Neurons** are in the **Medial Lemniscus System**

Answer 46

Question 47

Identify where the **Anterior White Commissure** is in the **Spinothalmic Tract**

Answer 47

Question 48

Identify approximately where the **Spinothalmic Tract** meets the **Medial Lemniscus System**

Answer 48

Question 49

Identify where the **First Order Neurons** are in the **Spinothalmic Tract**

Answer 49

Question 50

Identify where the **Second** **Order Neurons** are in the **Spinothalmic Tract**

Answer 50

Question 51

Identify where the **Third** **Order Neurons** are in the **Spinothalmic Tract**

Answer 51

Question 52

What type of **Sensory Loss** would occur if a **Lesion** occured as shown? What **Senses** are **Lost** on **Which Sides**?

Answer 52

Dissociative Sensory Loss. Proprioception is lost on the right side of the body, while pain is lost on the left side of the body

Question 53

What type of **Sensory Loss** would occur if a **Lesion** occured as shown? What **Senses** are **Lost** on **Which Sides**?

Answer 53

Dissociative Sensory Loss. Proprioception is lost on the left side of the body, while pain is lost on the right side of the body

Question 54

What type of **Sensory Loss** would occur if a **Lesion** occured as shown? What **Senses** are **Lost** on **Which Sides**?

Answer 54

Associative Sensory Loss on the left side of the body. Both proprioception and pain are lost on the left side of the body

Question 55

What type of **Sensory Loss** would occur if a **Lesion** occured as shown? What **Senses** are **Lost** on **Which Sides**?

Answer 55

Associative Sensory Loss on the right side of the body. Both proprioception and pain are lost on the right side of the body

Question 56

Identify the **Pathway** of **Corticospinal Signals** in the spinal cord

Answer 56

Question 57

What is the **Reflex** that occurs in the **Spinal Cord** when a **Lower Motor Neuron** recieves input from a **Proprioception Neuron**?

Answer 57

The Myotactic Reflex

Question 58

Identify the **Pyramidal Decussation**

Answer 58

Question 59

Identify the **Lower Motor Neurons**

Answer 59

Question 60

Identify the **Upper Motor Neurons**

Answer 60

Question 61

What type of **Paralysis** would occur if a **Lesion** were to occur at this section of the **Corticospinal Tract**?

Answer 61

Spastic Paralysis

Question 62

What type of **Paralysis** would occur if a **Lesion** were to occur at this section of the **Corticospinal Tract**?

Answer 62

Flaccid Paralysis