Gut-Brain Axis

Question 1

Gut-Brain Axis

(2)

Answer 1

• bidirectional link between CNS and ENS
• enables connection between gut microbiota and brain

Question 2

Gut Microbiota

(4)

Answer 2

• complex community of microorganisms in the gastrointestinal tract
• healthy gut microbiome is rich and diverse
• neurons in the walls of the GI tract detect chemicals produced by bacteria
• information converted into action potentials transmitted to the vagus nerve

Question 3

Gut Dysbiosis

(2)

Answer 3

• imbalance in gut bacteria, number of helpful bacteria decline
• can impact psychological processes and behaviour such as stress and anxiety

Question 4

Vagus Nerve

(3)

Answer 4

• one of the biggest nerves connecting the gut and brain
• from brain stem to intestines
• sends signals in both directions but mainly afferent