NB16 Ascendning pathways (important you still revise using posters)

Question 1

Dorsal column pathway detects:

Answer 1

fine touch (discriminative), pressure, vibration, proprioception

Question 2

Spinothalmic pathway detects:

Answer 2

pain and termperature

Question 3

1) Which ascending pathway is ipsilateral?

2) and contralateral?

Answer 3

1) dorsal colmn

2) spinothalmic (also called anterolateral system or the ventrolateral system)

Question 4

1. Where is the primary somatosensory cortex?

Answer 4

1. Postcentral gyrus

Question 5

2. What are each of the four brodman areas of the cortex responsible for?

Answer 5

2. 1. Area 1: Cutaneous stimulus
3. 2. Area 2: touch and proprioception (size and shape)
4. 3. Area 3a: Proprioception
5. 4. Area 3b: Cutaneous stimulus and Primary Somatosensory cortex

Question 6

3. Where is the Secondary somatosensory cortex located?

Answer 6

3. Superior aspect of lateral sulcus