Neuronal Control of Movement

Question 1

Where is the insertion of a muscle?

Answer 1

Attachment to the mobile end of the muscle

Question 2

Where are the elbow flexors?

Answer 2

Anterior compartment of the upper arm

Question 3

Where are the elbow extensors?

Answer 3

Posterior compartment of the upper arm

Question 4

Where are the carpal and digit flexors?

Answer 4

Anterior compartment of the forearm

Question 5

Where are the carpal and digit extensors?

Answer 5

Posterior compartment of the forearm

Question 6

Where are the knee/stifle flexors?

Answer 6

Anterior compartment of the thigh

Question 7

Where are the knee/stifle extensors?

Answer 7

Posterior compartment of the thigh

Question 8

Where are the thigh adductors?

Answer 8

Medial compartment of the thighs

Question 9

Where are the muscles which dorsiflex the ankle/extend the digits?

Answer 9

Anterior compartment of the lower leg

Question 10

Where are the muscles which plantiflex the the ankle/flex the digits?

Answer 10

Posterior compartment of the lower leg

Question 11

What is a dermatome?

Answer 11

Area of skin supplies by one single pair of spinal nerves

Question 12

What is a myotome?

Answer 12

Group of muscles supplied by one single pair of spinal nerves

Question 13

Where areas are the 2 spinal cord swellings (intumescence)?

Answer 13

Cervical and lumbosacral

Question 14

What are the 2 spinal nerve plexi?

Answer 14

Brachial plexus (forearm/forelimb) and lumbosacral (pelvic limb)

Question 15

Where are the intercostal nerves?

Answer 15

Between ribs, T1-T11

Question 16

Where is the sciatic nerve?

Answer 16

From lumbosacral plexus down the leg

Question 17

Do the major motor nerves (intercostal/sciatic) have sensory or motor function?

Answer 17

Both - 1 sensory and 1 motor

Question 18

Where is the musculocutaneous nerve?

Answer 18

Anterior compartment of the upper arm (elbow flexors)

Question 19

Where does the radial nerve supply?

Answer 19

Posterior compartment of the upper arm

Question 20

Where does the median/ulnar nerve supply?

Answer 20

Forearm and hand/distal forelimb

Question 21

Where does the obturator nerve supply?

Answer 21

Medial compartment of the thigh (adductors)

Question 22

Where does the femoral nerve supply?

Answer 22

Anterior compartment of the thigh (stifle extensors)

Question 23

Where does the sciatic nerve supply?

Answer 23

Posterior compartment of the thigh (stifle extensors)

Question 24

Which nerves does the sciatic nerve fracture into in the lower limbs?

Answer 24

Fibular (peroneal) nerve and tibial nerve

Question 25

Where does the fibular (peroneal) nerve supply?

Answer 25

Anterior compartment of the lower leg (tarsal flexors and digit extensors)

Question 26

Where does the tibial nerve supply?

Answer 26

Posterior compartment of the lower leg (tarsal extensors and digit flexors)

Question 27

What is the role of the primary motor cortex?

Answer 27

Initiation and control of voluntary movements

Question 28

What is the role of the premotor area?

Answer 28

Organising motor functions before they are initiated in the primary motor cortex

Question 29

What is the role of the pre-frontal area?

Answer 29

Controls the motivation and foresight to plan and initiate movements

Question 30

Where are the cell bodies of the upper motor neurones?

Answer 30

In the cerebral cortex

Question 31

Where are the cell bodies of the lower motor neurones?

Answer 31

Ventral horn of spinal cord OR cranial nerve nuclei

Question 32

Where are the major motor systems in the brain? (coordination of motor actions)

Answer 32

Cerebellum and basal nuclei