OF MEDICAL PHYSIOLOGY
14TH
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Chapter 1. Functional Organization of the Human Body and Control of the “Internal
Environment”
Test Bank
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, Causes growth of follicles in the ovaries and sperm maturation in Sertoli cells of testes
Follicle-stimulating hormone structure
Peptide
Anterior pituitary hormone
Luteinizing hormone
Luteinizing hormone function
Stimulates testosterone synthesis in Leydig cells of testes; stimulates ovulation, formation of
corpus luteum, and estrogen and progesterone synthesis in ovaries
Luteinizing hormone structure
Peptide
Posterior pituitary hormone
Antidiuretic hormone
Antidiuretic hormone function
Increases water reabsorption by the kidneys and causes vasoconstriction and increased blood
pressure
Antidiuretic hormone structure
Peptide
Posterior pituitary hormone
Oxytocin
Oxytocin function
Stimulates milk ejection from breasts and uterine contractions
Oxytocin structure
Peptide
Thyroid hormone
Thyroxine (T4) and triiodothyronine (T3)
Thyroxine (T4) and triiodothyronine (T3) function
Increases the rates of chemical reactions in most
cells, thus increasing body metabolic rate
Thyroxine (T4) and triiodothyronine (T3) structure
Amine
Thyroid hormone
Calcitonin
Calcitonin function
Promotes deposition of calcium in the bones and
decreases extracellular fluid calcium ion
concentration
Calcitonin structure
Peptide
Adrenal cortex hormone
Cortisol
Cortisol function
Has multiple metabolic functions for controlling metabolism of proteins, carbohydrates, and
fats; also has anti-inflammatory effects
Cortisol structure
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, Steroid
Adrenal cortex hormone
Aldosterone
Aldosterone function
Increases renal sodium reabsorption, potassium
secretion, and hydrogen ion secretion
Aldosterone structure
Steroid
Adrenal medulla hormone
Norepinephrine
Norepinephrine function
Same effects as sympathetic stimulation
Norepinephrine structure
Amine
Adrenal medulla hormone
Epinephrine
Epinephrine function
Specific for Thyroid hormones in direct association with one or more of the chromosomes.
Nucleus Receptors
Released by axon terminals ofneurons into the synaptic junctions and act locally to control
nerve cell functions.
Neurotransmitters
released by glands or specializedcells into the circulating blood and influence the function of
target cells at another location in the body.
Endocrine hormones
Secreted by neurons into the circulating blood and influence the function of target cells at
another location in the body.
Neuroendocrine hormones
Secreted by cells into the extracellular fluid and affect neighboring target cells of a different
type.
Paracrines
Secreted by cells into the extracellular fluid and affect the function of the same cells that
produced them.
Autocrines
Peptides secreted by cells into the extracellular fluid and can function as autocrines, paracrines,
or endocrine hormones
Cytokines
Interleukins, colony-stimulating factors, interferons, and tumor necrosis factors.
Examples of Cytokines
Adipokines
Cytokines produced by Adipocytes
Most of the hormones in the body are
Polypeptides or proteins
Hypothalamus released hormone
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