New Copyright © The McGraw-Hill Companies, Inc. Permission … · 2020. 6. 13. · Inc. required...
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Transcript of New Copyright © The McGraw-Hill Companies, Inc. Permission … · 2020. 6. 13. · Inc. required...
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Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Neuron
Nerve impulse
Neurotransmitter
Target cells
Target cells
(b) Endocrine system
(a) Nervous system
Endocrine cells
Hormone in bloodstream
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Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Blood
Transport protein
Free hormones
Bound hormone
Hydrophobic hormone
Tissue fluid Receptor in nucleus
Second- messenger activation
Receptor in plasma membrane
Target cell
Hydrophilic hormone
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(a) 4 weeks
(b) 8 weeks (c) 16 weeks
Future hypothalamus
Telencephalon of brain
Neurohypophyseal bud
Hypophyseal pouch
Pharynx
Tongue
Mouth
Hypothalamus
Optic chiasm
Posterior lobe
Anterior lobe
Sphenoid bone
Pharynx
Pituitary stalk
Hypothalamus
Pharynx
Hypophyseal pouch
Future thyroid gland
Neurohypophyseal bud
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
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