The brain stem

Question 1

The hindbrain

Answer 1

connects the spinal cord to the rest of the brain. sensory and motor pathways pass through the hindbrain to and from regions that are situated higher up in the brain. sensory information coming in from one side of the body crosses over at the hindbrain level, projecting to the opposite side of the brain. and outgoing motor messages from one side of the brain to cross over at the hindbrain level, controlling movement and other motor functions the opposite side of the body

Question 2

Contralateral organization

Answer 2

accounts for why people who have strokes on one side of the brain experience muscle weakness or paralysis on the opposite side of the bpdy

Question 3

The Medula

Answer 3

is situated at the base of the brain directly above the spinal cord. it is at the level of medulla that ascendinh sensory pathways and descending motor pathways crisscross to the contralateral side of the body.

Question 4

The Medulla part 2

Answer 4

the medulla plays a critical role in basic life-sustaining functions. it contains centers that control such vital autonomic functions as breathing, heart rate, and blood pressure. it also controls of vital reflexes, including swallowing, coughing, vomiting, and sneezing. because it is involved in such critical functions, damage to this part of the brain can rapidly prove fatal

Question 5

Pons

Answer 5

above the medula is a swelling tissue, which represents the uppermost level of the hindbrain

Question 6

Cerebellum

Answer 6

bulges out behind the pons is the large cerebellum, on each side of the ponds, a large bundle of axons connects it to the cerebellum. the word pons means “bridge” and the pons is a brigge of sorts

Question 7

Cerebellum part 2

Answer 7

information from various other brain regions located higher up in the brain is relayed to the cerebellum via the pons, the pons also contains centers that play an important rold in regulating breathing

Question 8

Cerebellum part 3

Answer 8

the cerebellum functions in the control of balance, muscle tone, and coordinated muscle movements. it is also involved in the learningof habitual or automatic movements and motor skills, such as typing, writing, or backhanding a tennis ball