WorksheetsTEAS Science 2
Total questions: 15
Worksheet time: 8mins
.The ______________ is sometimes called the fight and flight system and is the part of the autonomic nervous system which increases the heart rate and inhibits the digestive system.
sympathetic division
parasympathetic division
sensory division
somatic motor division
.In the autonomic nervous system, most parasympathetic postganglionic fibers release the neurotransmitter
Acetylcholine
Norepinephrine
Serotonin
Glutamate
.Hormones act on certain cells in the body because those cells have: a. b. c. d. e.
Blood vessels which deliver the hormone to them
Ducts which carry the hormone to them
Cellular activities which control the hormone
Receptors which bind to the hormone
A resting membrane potential
The hormones responsible for the regulation of calcium levels in the blood are:
Follicle stimulating hormone and luteinizing hormone
Glucagon and insulin
Calcitonin and parathyroid hormone
Oxytocin and antidiuretic hormone
Epinephrine and norepinephrine
The function of hemoglobin is to:
a. protect the DNA of erythrocytes
produce red blood cells
produce antibodies
carry oxygen
trigger the cascade of clotting reactions.
A person's ABO blood type is determined by antigens present on the:
red blood cells
platelets
white blood cells
gamma globulins
blood vessels walls
.In the negative feedback loop that controls the rate of erythropoiesis, the trigger for increasing RBC production is:
decreased number of erythrocytes.
increased levels of carbon dioxide in the red bone marrow
increased levels of carbon dioxide in the cerebrospinal fluid
decreased levels of oxygen in the kidney
decreased solute concentration of blood circulating in the hypothalamus.
The substance that forms the network of threads in a blood clot is:
fibrinogen
thrombin
prothrombin
fibrin
prothrombin activator (prothrombinase)
The most numerous white blood cell which is characterized by a nucleus with 3- 5 lobes and functions as a phagocyte is a(n):
neutrophil
eosinophil
basophil
monocyte
lymphocyte
The blood cell which contains a nucleus nearly as large as the cell and is involved with antibody production and mediates the immune response is a(n):
neutrophil
eosinophil
basophil
monocyte
lymphocyte
The bicuspid (mitral) valve is located between the:
right ventricle and the aorta
right ventricle and the pulmonary trunk.
left atrium and the left ventricle
right and left atria
right and left ventricles.
The layer of the heart wall responsible for its pumping action is the: a. . b. . c. . d. . e. .
fibrous pericardium
serous pericardium
epicardium
myocardium
endocardium
.All deoxygenated blood returning from the body flows into the: a. . b. . c. . d. . e.
right atrium
right ventricle
coronary sinus
left atrium
left ventricle.
The thickest wall chamber of the heart which pumps blood to the body is the:
right atrium
left atrium
right ventricle
left ventricle
The "pacemaker" of the heart which is located in the right atrial wall near the opening of the superior vena cava is the: ab. c. d. e.
. AV (atrioventricular) node
SA (sinoatrial) node
Purkinje fibers
AV (atrioventricular) bundle (bundle of His)
gap junction of the atrial cells
