CHAPTER 10,11,12 : NERVOUS SYSTEM UNFAMILIAR CONCEPTS

Question 1

TEMPORAL SUMMATION AND SPATIAL SUMMATION

Answer 1

→ temporal summation: involves one strong nerve sending constant signals in succession.
→ spatial summation: involves multiple nerves sending a signal to the cell body at the same time.

Question 2

SIX CHEMICAL CLASSES OF NEUROTRANSMITTERS

Answer 2

→ acetylcholine
→ biogenic amines
→ amino acids
→ purines
→ peptides
→ gasses and liquids

Question 3

DIFFERENTIATE BETWEEN ASSOCIATION FIBERS, COMMISSURE FIBERS, AND PROJECTION FIBERS.

Answer 3

→ association: nerves that allow structures in the same hemisphere to communicate, extend horizontally.
→ commissure: connects the 2 hemispheres of the brain, the biggest commissure fiber is the corpus callosum.
→ projection: nerves that connect the upper CNS to the lower CNS (spinal cord), fibers extend vertically.

Question 4

ORGAN FUNCTIONS OF RETICULAR FORMATION, BASAL NUCLEI, AND LIMBIC SYSTEM

Answer 4

→ reticular formation: controls visceral function in the body
→ basal nuclei: filters out unnecessary movements and allows for smooth movements.
→ limbic system: controls our emotions and ties emotional value into things.

Question 5

PATHWAY OF CEREBROSPINAL FLUID

Answer 5

PATHWAY OF CEREBROSPINAL FLUID

Choroid plexus (CSF made) → 3rd ventricle (more CFS made) → cerebral aqueduct → 4th ventricle (more CSF made) → subarachnoid space → arachnoid granulations → dural venous sinuses