Human brain 2

Question 1

What does sagittal and parasagittal mean?

Answer 1

sagittal- though midline

parasagittal- not through midline

Question 2

How many cranial nerves does the brain stem contain?

Answer 2

10 (not olfactory or optic)

Question 3

What is the brain stem composed of?

Answer 3

Medulla oblongata, PONS, and mesencephalon (midbrain)

Question 4

What is decussation?

Answer 4

crossing over

Question 5

What does PONS connect to and how?

Answer 5

Cerebellum by 3 pairs of peduncles.

Question 6

What is the medulla oblongata?

Answer 6

center for respiration and circulation. (digestion sneezing swallowing)

Question 7

What are olives?

Answer 7

In medulla oblongata , send info to cerebellum (inferior olive)

Question 8

What does the pons contain?

Answer 8

respiratory centres

Question 9

What are the roles of the cerebellum?

Answer 9

muscle tone, coordination,motor error checking, learning.

Question 10

What happens in cerebellar ataxia?

Answer 10

loss of cerebellar neurons, causes jerky inprecise movements.

Question 11

What does the mesencephalon contain?

Answer 11

SUbstantia nigra (GABA and dopamine), nuclues ruber (associated with cerebellum). TECTUM

Question 12

what does the tectum contain?

Answer 12

Superior and inferior colliculi. Visual (superior) and auditory (inferior) reflexes.

Question 13

What is the midbrain made up of?

Answer 13

Tegmentum and tectum

Question 14

What does the diencephalon contain?

Answer 14

thalamus, hypothalamus, pineal.

Question 15

What does the diencephalon link?

Answer 15

The midbrain and cerebrum

Question 16

What is the thalamus?

Answer 16

The processing and relay centre for all senses BUT smell. Have a motor role + in arousal and emotion.

Question 17

What does the hypothalamus do?

Answer 17

Wide variety of roles. Eating , drinking, sexual behaviour, stress.
Links to endocrine system.

Question 18

What is the pineal?

Answer 18

an endocrine organ. It produces melatonin and serotonin.