APHY 102 (APHY102)

Who regulates pituitary gland secretion? correct answer: the hypothalamus sends "messages" to the pituitary gland to release hormones What is a hormone and how does it act correct answer: a regulatory substance produced in an organism and transported in tissue fluids such as blood or sap to stimulate specific cells or tissues into action. a synthetic substance with an effect similar to that of an animal or plant hormone. a person's sex hormones as held to influence behavior or mood. ...

What is a hormone and how does it act? correct answer: Hormones are chemical messengers that are responsible for regulation. They are secreted into body fluids, mainly blood. It has specific actions on target tissues, which are any tissue that has specific receptors for that particular hormone. Understand the role of negative feedback in control of hormone secretions. correct answer: A control mechanism in which rising level of a hormone leads to a decrease in hormone secretion What is a...

Hormones from the adrenal medulla increase correct answer: blood pressure heart rate breathing rate Secretions that affect only nearby cells are termed correct answer: paracrine Steroid hormones correct answer: are soluble in lipids combine with protein receptor molecules cause messenger RNA synthesis The hormone that stimulates calcium deposition into bone is correct answer: calcitonin The pineal gland is correct answer: attached to the thalamus. Which of the following h...

Who regulates pituitary gland secretion? correct answer: Releasing hormones from the hypothalamus What is a hormone and how does it act? correct answer: Hormones are chemical messengers that are responsible for regulation. They are secreted into body fluids, mainly blood. It has specific actions on target tissues, which are any tissue that has specific receptors for that particular hormone. Compare and contrast glucagon and insulin correct answer: Glucagon stimulates the liver to break ...

A person under stress may have a lowered resistance to infection. T or F correct answer: True The B vitamins are : a. essential for normal cellular metabolism b. involved in the oxidation of carbohydrates, lipids, and protiens c. grouped because they are in the same foods d. all of the above. correct answer: all of the above. Deficiency of vitamin__________ causes osteomalacia a. E b. D c. C d. A correct answer: b. D Circulation is vital because it a. inflates the...

Diabetes insipidus is caused by _____________. correct answer: ADH deficiency T/F: Persons with type AB blood are sometimes called universal donors. correct answer: False Steriod hormones ______________. correct answer: All of the above T/F Plasma contains fibrinogen, serum does not. correct answer: True Sweat gland is an example of a(n) _________ gland. correct answer: exocrine The percentage of red blood cells in a sample of human blood is normally about _______. correct a...

What is a hormone and how does it act? correct answer: Hormones are chemical messengers that are responsible for regulation. They are secreted into body fluids, mainly blood. It has specific actions on target tissues, which are any tissue that has specific receptors for that particular hormone. Role of negative feedback in control of hormone secretions correct answer: Most hormones are controlled by negative feedback, in which the hormone feeds back to decrease its own production. This type...

What is a hormone and how does it act? correct answer: Hormones are chemical messengers that are responsible for regulation. They are secreted into body fluids, mainly blood. It has specific actions on target tissues, which are any tissue that has specific receptors for that particular hormone. Paracrine Gland correct answer: Hormones enter interstitial fluid but affect only neighboring cells Autocrine Glands correct answer: Hormones affect only the secreting cell Endocrine Glands co...

Hydrophobic correct answer: 1.) Fear of water. 2.) Steroid hormones: testosterone, estrogen. 3.) Fats. Hydrophilic correct answer: 1.) Love of water. 2.) Amino-acid hormones: insulin. If a hormone is a steroid based hormone, does it bind to a hormone receptor on the cell surface, or does it diffuse through the plasma membrane? correct answer: It diffuses through the plasma membrane. Steroid based hormones correct answer: Bind to internal receptors. Amino-acid based hormones ...

Which of the following correctly matches a valve to its function? a. Pulmonary valve—permits one—way blood flow from the left ventricle to the aorta b. Tricuspid valve—permits one-way blood flow from the right to the left atrium c. Mitral valve—permits one—way blood flow from the left atrium to the left ventricle d. Aortic valve—permits one—way blood flow from the right ventricle to the pulmonary trunk correct answer: c A person under stress may have a lowered resistance ...