The brain

Question 1

what things is the brain protected by?

Answer 1

crainal bones
crainal meninges

Question 2

function of meninges?

Answer 2

• hold CSF(cerebrospinal fluid)
• protect/support brain
  -stops infection of pathogens

Question 3

what are the 3 layers of meninges?

Answer 3

1. dura mater
2. arachnoid
3. pia mater

Question 4

how does the blood flow to the brain?

Answer 4

via blood vessels through the circle of wills located in the base of the brain

Question 5

what is the function of the BBB(blood-brain barrier)?

Answer 5

stops pathogens or harmful substances from entering the brain

Question 6

what makes CSF and how is CSF formed?

Answer 6

• formed by ependymal cells which are located in the ventricles of the Brian,
• choroid plexuses makes csf as its the barrier that seperated the blood from CSF and whenblood of filtered some go to ventricles of brain causing CSF

Question 7

what are some features of the cerebrum?

Answer 7

• convoluted
  -gyri and sulcus
  -conscious
  -4 lobes

Question 8

what are the 5lobes in the cerebrum and define ?

Answer 8

parietal= taste
frontal=movement
occipital=vision
temporal= hearing
limbic= feelings

Question 9

what are some of the features of cerebellum?

Answer 9

subconscious
have to learn new skills
controls muscle coordination
balance and posture

Question 10

what 3 things is the brain stem made up of?

Answer 10

medulla oblongata
pons
midbrain

Question 11

what are the 3 regulations in the brain stem?

Answer 11

cardiac centre= heart rate
vasomotor= blood pressure
respiratory= respiratory movements

Question 12

what is the region of diencephalon made up of and define each one?

Answer 12

• hypothalamus= maintains body temp, controls output of hormones
• thalamus= relays sensory info (transmits sensory signal from body to brain for processing)
• epithalamus= has the pineal gland what produces hormone that regulates sleep