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| What do hormones influence? |
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Definition
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Definition
-Brain Hormone directs an endocrine gland
-Ecdysone induces molting
-Juvenile Hormone inhibits metamorphosis |
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Definition
| Initiates many other hormones to begin to secreting and thus change ontogeny |
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Definition
-Secrete Hormones carried by circulatory system
-Located all throughout the body including reproductive organs, brain, adrenal glands, and and thryoid glands. |
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-Affects insect during middle of larva phase
-When production is low the signal to develop into a pupa and eventually an adult |
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| What are the two hormones types and how do they differ? |
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Definition
-Amino Acids: Binds to receptor on cell surface; This pathway ultimately activates enzymes or protein synthesis;
-Steroids: Enter cell and bind to receptor in nucleus; Intitates protein synthesis; example: testosterone |
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Term
| How is the regulation of blood calcium maintained? |
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Definition
-It has two antagonistic hormones that keep it in balance (homeostasis)
1. Calcitonin: Comes from the thryoid gland; Decreases the Ca+2 levels; Tones it down
2. Parathormone: Comes the Parathryoid gland; Increases Ca+2 levels;Pumps it up |
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Term
| Who controls blood glucose levels? How do they keep it in homeostasis? |
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Definition
-The pancreas controls the blood glucose levels
-It uses Glucagon and Insulin for balance
-Glucagon: Comes from Alpha cells; Increases blood glucose levels
-Insulin: Comes from Beta cells; Decreases blood glucose levels |
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| What controls the body fat levels? |
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Definition
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Definition
-Response to Stress
-Interaction between the Endocrine and the Nervous Systems
-The Nervous System causes norepinephrine and epinephrine release(Excites), controls heart rate, breaks glycogen down, controls respiration and metabolism
-The Hypothalamus(Endocrine System) causes glucose synthesis and raises blood pressure |
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Term
| The importance of the Hypothalamus |
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Definition
-Produces Neurohormones(hormones from nerve cells)
1. ADH: Reduces blood osmolarity
2. Oxytocin: Stimulates smooth muscle contractions in the uterus and mammary glands; Positive feedback hormone
3. Controls secretions by Anterior Pituitary |
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Term
| Anterior Pituitary Secretions |
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Definition
-Releases LH() and FSH(): Causes gonads to make sex hormones(testosterone, estrogen and progesterone)
-Induces to release by the hypothalamus's hormone GnRH
-Hypogonadotropic Hypogonadism would result if the hypothalamus didn't make GnRH |
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-Stimulated by the Anterior Pituitary's TSH
-Thyroid makes thyroxine, which boosts metabolism
-Responsible for hypothyroidism(sluggish metabolism) and hyperthyroidism(overworked metabolism)
-Thyroid located in throat |
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-Stimulated by the Anterior Pituitary's secretion of ACTH
-Releases glucocorticoids and androgens
-Located on kidneys |
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Definition
| -Induces mammals to produce milk in mammaries |
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| -Induces bones and muscles to grow |
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