PART 1

Question 1

Allow cells to communicate with each other to regulate body activities

Answer 1

Chemical Messenger

Question 2

Stimulates the cell that originally secreted it

Answer 2

Autocrine

Question 3

Local messengers secreted by one cell type and affect neighboring cell

Answer 3

Paracrine

Question 4

Secreted by neurons to activate another neuron

Answer 4

Neurotransmitter

Question 5

Secreted into bloodstream by certain glands and cell

Answer 5

Endocrine

Question 6

Includes glands and specialized endocrine cells

Answer 6

Endocrine system

Question 7

Chemical messenger that is secreted into the blood, travels to a distant tissue& binds to specific receptor

Answer 7

Hormone

Question 8

Nonpolar; include steroid hormones, thyroid hormones and fatty acid

Answer 8

Lipid- Soluble Hormones

Question 9

Polar; includes protein, peptide, and amino acid

Answer 9

Water Soluble Hormones

Question 10

Directly by blood-borne; are sensitive to blood levels of particular substance

Answer 10

Humoral Stimuli

Question 11

Stimulated by action potential

Answer 11

Neural Stimuli

Question 12

Hormone is secreted to stimulate the secretion of other hormones

Answer 12

Hormonal Stimuli

Question 13

Secreted with the release of humoral stimuli

Answer 13

Companion hormones

Question 14

Prevents further hormone secretion

Answer 14

Negative feedback

Question 15

Self promoting system whereby the stimulation of hormone secretion increases overtime

Answer 15

Positive feedback

Question 16

Proteins where the hormones bind

Answer 16

Receptors

Question 17

Location on cell where the hormone binds

Answer 17

Receptor site

Question 18

Tendency for each type of hormone to bind to one type of receptor

Answer 18

Specificity

Question 19

Often found in cell nucleus where the lipid soluble hormone bind

Answer 19

Nuclear receptor

Question 20

Finger like projection that recognize & bind specific nucleotide sequence in DNA

Answer 20

Hormone-Response Elements

Question 21

Forms from the combination of hormone and its receptor

Answer 21

Transcription factor

Question 22

Increases the synthesis of certain proteins that produce the target cell’s response

Answer 22

mRNA

Question 23

Proteins that extend across cell membrane; where water soluble hormone binds

Answer 23

Membrane bound receptor

Question 24

They act on already existing enzymes

Answer 24

Second messenger system