by Dsmith


keywords:
Bookmark and Share



Front Back
luconeogenesis occurs in the liver due to the action of:
cortisol
Release is an example of a positive feedback control mechanism
oxytocin
Sometimes prolonged excessive exposure to high hormone concentrations causes a phenomenon known as:
Down-Regulation
The neurohypophysis or posterior lobe of the pituitary gland is not a true endocrine gland because:
It is only a hormone storage area that receives hormones from the hypothalamus for release
Steroid hormones exert their action by:
Entering the nucleus of a cell and initiating or altering the expression of a gene
The second-messenger mechanism of hormone action operates by:
Binding to specific receptors and employing the services of G proteins and cAMP
Thyroid hormone (a small iodinated amine) enters target cells in a manner similar to:
Steroid hormones, because both diffuse easily in to target cells
The major targets of growth hormone are:
Bones and skeletal muscles
Which organ is responsible for synthesizing ANP?
Heart
The most important regulator of electrolyte concentrations in extracellular fluids is:
Aldosterone
Does calmodulin  act as a second messenger in second-messenger systems of hormone action?
no
Can An amino acid derivative  be a hormone.
yes
In circumstances where the body requires prolonged or increased levels of a hormone, the DNA of target cells will specify the synthesis of more receptors on the surface of the cells of the target organ. This is known as:
Up-Regulation
The liver is affected b which hormone
the Thyroid hormone
Thyroxine is dfferent from other peptide hormones because
It does not require a second messenger to effect a response
Catecholamines and/or peptide hormones bind to receptors on the surface of cells that comprise target organs. This binding causes:
Adenylate cyclase to generate cyclic AMP from ATP.
Glucocorticoids enable the body to deal appropriately with stress. They accomplish this by:
Increasing blood glucose, fatty acid, and amino acid levels and enhancing blood pressure
What ion is sometimes used as a second messenger of amino acid-base hormones?
Calcium
A hormone that regulates gamete production
FSH
Steroids or amino acid-based molecules released into the blood, which arouse tissues
Hormones
These produce testosterone
testes
Its primary function is to control the rate of body meta- bolism and cellular oxidation
Thyroid Hormone TH
Synthesize insulin
Pancreas
Consists of two functional areas: the adenohypophysis and the neurohypophysis.
Pituitary gland
Controlled by the sympathetic nervous system and release epinephrine and norepinephrine.8) Regulates the endocrine activity of the cortex portion of the adrenal gland
Adrenal medulla
Regulates the endocrine activity of the cortex portion of the adrenal gland
Adrenal cortex
A hormone produced in the adrenal cortex that enables the body to resist long term stress.
ACTH
Which test is used when anemia is suspected
Differential
Platelets are fragments of large multinucleated cells known as ________________.
Megakarocytes
The major group of leukocytes that contain no observable cytoplasmic granules and are more abundant in lymphoid tissue and lymph.
Agranulocytes
An insoluable compound that forms a meshwork of strands that trap RBC's and is, therefore, considered the structural basis of clot formation.
Fibrin
Another name for the proteins in plasma known as agglutinins
Antigens
The ability of leukocytes to move in and out of blood vessels in order to reach sites of inflammation or tissue destruction
Diapedesis
Nucleated cells that are formed in the bone marrow whose numbers average from 4,000 to 11,000 per uL of blood.
leukocytes
Anucleocyte (without a nucleus) cells, when mature, whose numbers average 4.5 to 5.0 million per uL of blood
erythrocytes
What is the nonliving fluid matrix portion of blood?
Formed elements
What is the technical name for a blood clot?
Throbin
What type of tissue is blood?
Connctive
How many liters of blood are contained in the circulatory system of the average adult
5.5 L
hat is the least common blood type in whites, blacks, and Asians?
AB
What is the technical term for the process of blood clot formation?
Coagulation
Whole blood is composed of plasma and ________________.
Formed elements
The largest of the leukocytes.
Monocytes
What is the smallest of the leukocytes?
lymphocytes
You are given a capillary tube containing uncentrifuged blood and told to determine the patient’s hematocrit. The original column height before centrifuging is 50 mm. After spinning, the bottom layer of the capillary tube containing cells is 20 mm and the top layer containing plasma is 30 mm. What is the patient’s hematocrit value?
40
Also called reduced hemoglobin, this is the form of hemoglobin that results after oxygen diffuses into the blood.
deoxyhemoglobin
This type of leukocyte is present in high amounts in the blood when a patient has a parasitic infection.
eosinophil
James has a hemoglobin measurement of 16 g/100 ml blood. This is:
Within normal range
o visible cytoplasmic granules are present in:
Monocytes
P>Place the following in correct developmental sequence

1. reticulocyte
2. proerythroblast
3. normoblast
4. late erythroblast


    
2, 4, 3, 1
x of y cards Next > >|