deve-early brain dev

Question 1

descrive development of the midbrain forebrain and hindbrain

Answer 1

when foetus is abr 3-4 weeks old
- long tube develops in the brain which divides the front into three distinct round section, forebrain midbrain hindbrain
-below hindbrain forms the spinal cord

when 5 weeks old
- forebrain and hindbrain have split further into two cavities,
- forebrain splits into anterior and posterior secction and
-the hindbrain splits in the middle
-midbrain does not divide

Question 2

describe decelopment of the cerellum and medulla

Answer 2

cerebellum is seen in the foetus in 6cweeks, and a year after burth grows three times in sixe
-cerebellum controls physical skills possibly accounting for the growth of the cerebellum
-cerebellum also controls responses such as fear and in functions such as processing sense information

medulla oblongata
-located in the hindbrain in front of cerebllum
-controls involuntary responses such as sneezing breathing and hesrt rate
-forms at 20 weeks old of fortus connects rest of the vrain to the spinal cord

Question 3

describe what brain is

Answer 3

the organ in your head made up of nerves that processes information and controls

Question 4

describe forehead midbrain hindbrain

Answer 4

forehead
- the anterior part of he brain, invluding the hemispheres and the central brain structures

midbrain
- the middle section of the brains forming part of the central nervous system

hindbrain
-the lower part of the brain thst includes the cerebellum pons and medulla oblongata

Question 5

what is anterior and posteriorv

Answer 5

anterior is directled towards the front when used in relation to our biology

posterior directed towards the bajc hwen used in relation to our biology

Question 6

sescribe cerebellum and medulla oblongata

Answer 6

cerebllum
an area of the brsin near to the brainstem that controls motor movements

medulla oblongata
connects the upperbrain to the spinal cord and controls automatic responses

Question 7

what is involuntary response and neural connections

Answer 7

involuntary tesponse is a response to a stimulus that occurs without someone making a conscious choice, they are automatic such as reflexes

neural connections is links formed by messages passing from one nerve cell to another