Chapter 4

Question 1

What are the parts of the hindbrain?

Answer 1

• Medulla Oblongata
• Pons
• Cerebellum

Question 2

What is the medulla Oblongata responsible for?

Answer 2

• breathing, heart rate, vomiting, salivation, coughing, sneezing
• the respiratory centre sensitive to many drugs (e.g. Barbiturates, opiates, and alcohol)
• some drugs activate the vomiting centre to cause nausea and vomiting (eg opiates)

Question 3

What is the cerebellum responsible for?

Answer 3

• initiation and co-ordination of body movements

- practised motor programs are stored here

Question 4

What is the locus coeruleus?

Answer 4

Hind-brain nucleus, diffuse projections, NE, mood and arousal

Question 5

What is the Periaqueductal Gray?

Answer 5

• central core of base of brain
• relays pain message to cortex
• rich in opiate receptors, one of the sites where opiates (e.g. Morphine) produce analgesia (relief from pain)

Question 6

What is the Ventral Tegmental Area (VTA)?

Answer 6

Dopamine neutrons make up Mesolimbic system

Question 7

What is the Substantia Nigra?

Answer 7

Dopamine neutrons make up nigrastaital system.

Question 8

What is the spinal cord?

Answer 8

• long tune of neural tissue surrounded by the vertebral column
• grey matter in the middle of the column-cell bodies;axons traveling up and down- white matter