Exam 3 Study Guide Review

Flashcards created for vocabulary and key concepts from the exam study notes.

Aplastic Anemia

The destruction of red bone marrow due to radiation.

Diffusion

The primary mechanism for exchange of substances across the capillary wall.

Active Hyperemia

Increase in blood flow in response to increased tissue metabolic activity.

Mean Arterial Pressure (MAP)

Calculated as MAP = (2 x Diastolic BP + Systolic BP)/3.

Bilirubin

Yellow pigmented substance produced by the removal of iron during hemoglobin metabolism.

Liver

The organ that synthesizes post-coagulation factors.

Autonomic System

The control system that primarily manages heart control, specifically the parasympathetic part.

Systolic Pressure

The higher number in a blood pressure reading; represents ventricular contraction.

P Wave

ECG representation of atrial depolarization.

Ventricular Ejection

Phase in the cardiac cycle when ventricular pressure exceeds aortic pressure.

Macrophages

Cells that remove old red blood cells, primarily in the spleen.

Neutrophils

The most abundant type of white blood cell; classified as a phagocyte.

Erythropoietin

The chemical that stimulates the synthesis of erythrocytes in red bone marrow.

Fibrinogen

A protein that assists in blood clotting and is involved in the formation of a platelet plug.

End Diastolic Volume (EDV)

The total volume of blood in the ventricle at the end of filling (before contraction).

Diameter of Vessels

A key factor affecting resistance to blood flow; smaller diameter increases resistance.

Platelet Plug

A temporary structure formed at the site of vessel damage to prevent blood loss.

Hemophilia

A genetic disorder characterized by a deficiency in coagulation factors, often factor VIII.

Cardiac Output (CO)

Volume of blood pumped by each ventricle per minute, calculated as CO = Stroke Volume x Heart Rate.

Autorhythmicity

The ability of certain cells within the heart to generate their own rhythmic electrical impulses.

Pulmonary Circuit

The pathway that carries deoxygenated blood from the heart to the lungs for oxygenation.

Systemic Circuit

The pathway that carries oxygenated blood from the heart to the rest of the body.