A&P2 Lab Exam 1 Mastering Questions
What area of the conduction system of the heart delays the impulse briefly, allowing the atria to contract before the ventricles?
AV node
High-performance liquid chomatography was used to quantitatively measure the amount of cortisol and ACTH in the patients' plasma sample. The results are Cortisol 4.1 mcg/dl (low) and ACTH 102 pg/ml (high): What could be the possible medical condition?
Addison's disease
Your morning cortisol levels was measured to be 2 mcg/dl and your morning adrenocorticotropic hormone (ACTH) levels was measured to be 100pg/ml thus you are diagnosed as having
Addison's disease
A person who is blood type B has what antibodies in their plasma?
Antibody A
Normally high levels of cortisol would inhibit release of?
Both CRH and ACTH
Which of the following ions will cause heart arrhythmias (erratic heart rate) when added to the extracellular fluid of heart muscle cells (i.e when dripped on an exposed heart). Na+ K+ Ca2+
Both Na+ and K+
High-performance liquid chomatography was used to quantitatively measure the amount of cortisol and ACTH in the patients' plasma sample. The results are Cortisol 60.1 mcg/dl (high) and ACTH 102 pg/ml (high): What could be the possible medical condition?
Cushing's disease
Your morning cortisol levels was measured to be 50 mcg/dl and your morning adrenocorticotropic hormone (ACTH) levels was measured to be 100pg/ml thus you are diagnosed as having
Cushing's disease
Vagal escape can be caused by sympathetic reflexes or initiation of a rhythm in the:
Purkinje fibers
In a normal ECG (EKG) wave tracing, atrial repolarization is hidden by the:
QRS complex
Which wave of the ECG (EKG) represents ventricular depolarization?
QRS complex
The erythrocytes clumping together and stacking up to form a column is called
Rouleaux formation
Which part of the intrinsic conduction system initiates the depolarizing impulse and sets the pace for the entire heart?
SA node
High-performance liquid chomatography was used to quantitatively measure the amount of cortisol and ACTH in the patients' plasma sample. The results are Cortisol 52.3 mcg/dl (high) and ACTH 10.2 pg/ml (low): What could be the possible medical condition?
Cushing's syndrome
High-performance liquid chomatography was used to quantitatively measure the amount of cortisol and ACTH in the patients' plasma sample. The results are Cortisol 2.3 mcg/dl (low) and ACTH 15 pg/ml (low). What could be the possible medical condition?
Secondary adrenal insufficiency
A quantitative measurement of the mineral content of bone is a..
T score
A quantitative measurement of the mineral content of bone is a_____
T score
Which wave on the ECG (EKG) represents ventricular repolarization?
T wave
Attacking viruses and tumors is a function of..
T-cell lymphocyte
Both the sympathetic and parasympathetic nervous systems are working together at rest.
TRUE
Human erythrocytes do not have nuclei
TRUE
Human leukocytes have nuclei.
TRUE
The SA node will generate action potentials even in the absence of all other stimulation.
TRUE
This hormone stimulates the thyroid gland to secrete thyroxine
TSH (thyroid-stimulating hormone)
In the myocardium, automaticity is the ability of muscle to depolarize spontaneously in the ________________ of _______________.
absence; external stimuli
Cortisol is secreted by the
adrenal cortex
Another name for epinephrine is...
adrenaline
A chemical injected or ingested that mimics the body's naturally occurring neurotransmitter epinephrine, and increases the heart rate would be a:
adrenergic agonist
Adding atropine to a heart will cause _____ in heart rate while adding Pilocarpine will cause ______ in heart rate
an increase; a decrease
Storing energy in the body by building large molecules from smaller ones is _____________
anabolism
Chemicals that work in the opposite direction as the neurotransmitter they mimic in the body are called
antagonist
Blood traveling through the Aortic semilunar valve of the heart subsequently enters the
aorta
Which of the following increases heart rate? pilocarpine sodium digitalis atropine
atropine
The intrinsic conduction system consists of _____________ cells that initiate and distribute action potentials throughout the heart.
autorhythmic
Releasing histamines is a function of..
basophil
Chemicals that mimic the body's naturally occurring neurotransmitter acetycholine in the body are called
cholinergic
A chemical injected or ingested to stimulate the parasympathetic nervous system to decrease the heart rate would be a:
cholinergic agonist
The cartilage that is in the BOTTOM part of the larynx
cricoid cartilage
What is the condition of a mothers antibodies attacking a fetus's blood due to her previous exposer to Rh antibodies?
Erythroblastosis fetalis
All leukocytes are also lymphocytes.
FALSE
Endocrine system organs function independently from other organs.
FALSE
The protective sac surrounding the heart is the epicardium.
FALSE (pericardium)
Stimulation of the parasympathetic nervous system results in what?
decrease in heart rate
A patient is diagnosed with sickle cell anemia, when diagnosed their erythrocyte sedimentation rate was 0mm/H. 6 Months later their erythrocyte sedimentation rate was 5mm/H. Has the disease (Think about it)
improved
Adding calcium ions to the extracellular fluid of heart muscle cells (i.e when dripped on an exposed heart). will case the heart rate to ____________.
increase
Atropine will _____ the heart rate.
increase
Phagocytosis by differentiating into macrophages is a function of..
monocyte
Phagocytosis of bacteria and fungi is a function of ..
neutrophil
Which leukocyte functions in phagocytizing bacteria?
neutrophil
A person who is blood type AB has what antibodies in their plasma?
no antibodies
Your fasting plasma glucose is measured twice with the results of 56mg/dl and 100mg/dl so you are diagnosed as having
normal blood sugar levels
A person with a T-score of 1 would be considered as having
normal bone density
A person with a T-score of -2 would be considered as having
osteopenia (bone thinning)
Blood is ____________ when it is in the pulmonary veins.
oxygenated
Which of the endocrine glands is responsible for Insulin secretion?
pancreas
Adrenocorticotropic hormone (ACTH) is secreted by the
pituitary gland
Follicle-stimulating hormone (FSH) is secreted by the
pituitary gland
55% of whole blood and the least dense component
plasma
non-living fluid matrix
plasma
Sealing small opening in blood vessels is a function of..
platelets
An abnormal excess of erythrocytes is called__________.
polycythemia
preventing blood loss (repairing damaged blood vessels), preventing infections
protection function of blood
maintains body temperature, maintains normal pH body tissues, maintains fluid volume in circulatory system
regulation function of blood
Blood traveling through the Tricuspid valve of the heart subsequently enters the
right ventricle
High-performance liquid chomatography was used to quantitatively measure the amount of cortisol and ACTH in the patients' plasma sample. The results are Cortisol 2.3 mcg/dl (low) and ACTH 15 pg/ml (low): What could be the possible medical condition?
secondary adrenal insufficiency
A frog is sitting in a 230C room. Which of the following room temperatures would increase the heart rate of the frog? 23 degrees C 32 degrees C 5 degrees C external temperature does not affect heart rate
32 degrees C
You have 4 EKG printouts from a person doing different activities: Just relaxed, laying down, just after sitting up from lying down, and just after exercising. The heart rate values from these readings are seen below. Which tracing would be while the person was lying down? A consistent 70 BPM A consistent 60 BPM A Decreasing heart rate stabilizing at about 70 BPM A consistent 85 BPM
A consistent 60 BPM
You have 4 EKG printouts from a person doing different activities: Just relaxed, laying down, just after sitting up from lying down, and just after exercising. The heart rate values from these readings are seen below. Which tracing would be while the person was just sitting doing no activities? A consistent 70 BPM A consistent 60 BPM A Decreasing heart rate stabilizing at about 70 BPM A consistent 85 BPM
A consistent 70 BPM
You have 4 EKG printouts from a person doing different activities: Just relaxed, laying down, just after sitting up from lying down, and just after exercising. The heart rate values from these readings are seen below. Which tracing would be after the person was exercising? A consistent 70 BPM A consistent 60 BPM A Decreasing heart rate stabilizing at about 70 BPM A consistent 85 BPM
A consistent 85 BPM
You have 4 EKG printouts from a person doing different activities: Just relaxed, laying down, just after sitting up from lying down, and just after exercising. The heart rate values from these readings are seen below. Which tracing would be immediately after the person sat up from lying down? A consistent 70 BPM A consistent 60 BPM A Decreasing heart rate stabilizing at about 70 BPM A consistent 85 BPM
A decreasing heart rate stabilizing at about 70 BPM
Which hormone(s) stimulate(s) the pituitary gland to release ACTH?
CRH (corticotropin-releasing hormone)
Stimulation of the parasympathetic nervous system ___
Decreases heart rate and force of cardiac muscle contraction remains the same
What are the 3 functions of blood?
Distribution, regulation, protection
Stimulation of the sympathetic nervous system ___
Increases heart rate and increases force of cardiac muscle contraction
If an Rh+ mother gives birth to a Rh+ baby what should she be given to avoid possible erythroblastosis fetalis with future pregnancies?
Nothing it is not a problem in this situation
Which wave on the ECG (EKG) represents atrial depolarization?
P wave
You have a thyroidectomized (thyroid gland removed) rat and a hypophysectomized (pituitary gland removed) rat both of which have a lower than normal metabolic rate. Which of the following would you inject the two rats with to get both rats at a normal metabolic rate. TSH (thyroid stimulating hormone) Propylthiouracil Thyroxine TRH (thyrotropin releasing hormone)
Thyroxine
Insulin is produced by the
beta cells of the pancreas
what is the only fluid tissue in the body?
blood
This hormone stimulates the calcium uptake in long bones
calcitonin
Your fasting plasma glucose is measured twice with the results of 135mg/dl and 129mg/dl so you are diagnosed as having
diabetes mellitus
Individuals with weakened hearts need to allow maximum time for venous return and increased stroke volume. These individuals would benefit from...
digitalis
Which of the following decrease heart rate? atropine epinephrine digitalis
digitalis
O2 from lungs and nutrients from digestion to body cells, transport of metabolic waste from body cells to elimination sites, transport hormones
distribution function of blood
Coordinates and integrates the function of all the different physiological systems
endocrine system
Attacking parasitic worms is a function of..
eosinophil
Lessening the severity of allergic reactions is a function of..
eosinophil
Which of the following increases the rate of depolarization in the heart?
epinephrine and norepinephrine
Transporting O2 and CO2 is a function of..
erythrocytes
This hormone stimulates bone growth and has effects on many homeostatic processes
estrogen
What effect does continuous vagal stimulation have on the heart?
initially decrease heart rate and force contraction, but return to normal contraction after vagal escape occurs
Blood traveling through the Bicuspid (mitral) valve of the heart subsequently enters the
left ventricle
Otherwise known as white blood cells, ____________ function is immunity.
leukocytes
what kind of tissue is blood?
specialized connective tissue
The specific cells that hormones exert on are called _______________.
target cells
name for the living blood cells
the formed elements
The cartilage that is in the TOP part of the larynx
thyroid cartilage
Name the two cartilages of the larynx?
thyroid cartilage and cricoid cartilage
The most important Hormone for Maintaining Metabolism is
thyroxine
Hormones that stimulate the secretion of other hormones are known as _________ hormones.
tropic