Exam 1 Powerpoint 1

Question 1

of neurons in human brain

Answer 1

86 Billion

Question 2

CNS consists of?

Answer 2

Nuclei (local accumulation of neuronal cell bodies;

Cortex (sheet-like arrays of nerve cells)

Tracts (axons)

Question 3

PNS consists of?

Answer 3

Ganglia (local accumulation of neuronal cell bodies)

Nerves (bundle of axons)

Question 4

PNS Sensory components?

Answer 4

Sensory ganglia and nerves, sensory receptors

Question 5

PNS Motor Components?

Answer 5

Visceral and Somatic motor system

Question 6

Visceral System

Answer 6

Smooth muscles Passive, autonomic

Question 7

Somatic System

Answer 7

Motor nerves to muscles active

Question 8

Sensory Pathway

Answer 8

Ascending, Afferent

Question 9

Motor Pathway

Answer 9

Descending, Efferent

Question 10

Neurons to Glia ratio

Answer 10

1:1

Question 11

Genes specifically in brain

Answer 11

6,000 out of 20,000

Question 12

Genomic DNA location

Answer 12

Nucleus

Question 13

mRNA location

Answer 13

Nucleus and cytoplasm

Question 14

Steps to get mature mRNA

Answer 14

pre-mRNA

Splicing: introns taken out

5’ end is capped

3’ end is polyadentylated

Question 15

Free Ribosomes

Answer 15

Synthesize proteins local to the cytoplasm and nucleus

Question 16

ER Ribosomes

Answer 16

Synthesis secreted proteins, proteins that exit the cell

Question 17

RNA to protein

Answer 17

mRNA replaces T with U

mRNA is made into 20 possible amino acids

Question 18

tRNA and rRNA

Answer 18

Transfer and Ribosomal, help in the translation process, do not encode proteins

Question 19

MicroRNA

Answer 19

Regulate protein production