Chapter 17: Blood - Formed Elements: Platelets

List three types of Formed Elements in Blood: 1) 2) 3)

1) Platelets 2) Leukocytes 3) Erythrocytes

What is the usual cause of Thrombocytopenia?

Bone Marrow Deficiency

T or F: Platelets are used to dissolve blood clots.

False - Platelets are used to form blood clots.

T or F: Thrombocytopenia is a disease caused by high Platelet numbers.

False - Thrombocytopenia is a disease caused by low Platelet numbers.

EXTRA: Formed Elements are also referred to as ________ _________.

Formed Elements are also referred to as Blood Cells.

Formed Elements in Blood generally have a ________ (long or short) life and ________ (do or do not) divide.

Formed Elements in Blood generally have a short life and do not divide.

EXTRA: What type of reaction do Platelets achieve by forming blood clots?

Hemostasis

The act of sticking Platelets to sites of injury is given what name?

Hemostasis

Where are the Stem Cells that generate (birth) Formed Elements found in Blood located?

In Red Bone Marrow

Platelets are fragments of what large precursor cell?

Megakaryocyte

The act of spontaneous bleeding from small blood vessels is called...

Petechiae

Platelets are the ________ (smallest or largest) formed elements found in the Blood.

Platelets are the smallest formed elements found in the Blood.

Name the specific Stem Cells that generates (birth) Formed Elements in Blood.

Pluripotent Hematopoietic Stem Cells

Petechiae causes what symptom to show on the body?

Small purple blotches on the skin

Where are Formed Elements found in Blood commonly generated (born) from?

Stem Cells

Thrombocytopenia results in ________ (induced or spontaneous) bleeding from ________ (large or small) blood vessels.

Thrombocytopenia results in spontaneous bleeding from small blood vessels.

Why are Platelets activated?

To stick to sites of injury

T or F: Formed Elements are the "Cells" in Blood.

True