Overview of Blood

A set of vocabulary flashcards covering key concepts related to the structure, functions, and components of blood as described in the lecture notes.

Functions of Blood

Transportation, defense, distribution of heat, and maintenance of homeostasis.

Formed elements

The cellular components of blood, including red blood cells (RBCs), white blood cells (WBCs), and platelets.

Plasma

The fluid component of blood, mostly water, which suspends the formed elements.

Hematocrit

The percentage of red blood cells in a blood sample, measured by centrifugation.

Erythrocytes

Red blood cells, responsible for transporting oxygen and carbon dioxide.

Leukocytes

White blood cells, crucial for the immune response and defense against infections.

Platelets (Thrombocytes)

Cell fragments involved in blood clotting and preventing blood loss.

Albumin

The most abundant plasma protein, involved in maintaining osmotic pressure and transporting fatty acids.

Globulins

Plasma proteins that transport molecules and are involved in immune response.

Fibrinogen

A plasma protein essential for blood clotting.

pH of blood

Average pH of about 7.4, indicating it's slightly basic.

Viscosity of blood

A measure of blood thickness, approximately five times greater than water.

Buffy coat

A thin layer composed of WBCs and platelets that lies above erythrocytes in a hematocrit.

Blood temperature

Normal blood temperature is about 38 °C (100.4 °F).

Homeostasis

The body's regulation of internal conditions, including temperature and pH levels.

Electrolytes in plasma

Ionized substances such as sodium and potassium, vital for various bodily functions.