A&P2 Lab Exam 1 Mastering Questions

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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


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