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Functions of the Cardiovascular System

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Questions and Answers

What is the function of the cardiovascular system in transporting materials?

Only transporting waste products
Transporting oxygen, nutrients, hormones, and immune system components (correct)
Only regulating pH and ions
Only transporting oxygen and nutrients

What is the role of the formed elements in the blood?

To transport dissolved substances
To transport oxygen, and to involve in blood clotting (correct)
To regulate pH and ions
To defend against toxins and pathogens, and to stabilize body temperature

What is the function of the myeloid stem cells in the production of blood cells?

To produce only RBCs
To produce only myeloid cells
To produce only lymphoid cells
To produce both myeloid and lymphoid cells (correct)

What is the characteristic of the blood in terms of its viscosity and pH?

High viscosity and slightly alkaline pH (A) Signup and view all the answers

What is the approximate percentage of blood volume in the body weight of an adult?

7-8% of body weight (C) Signup and view all the answers

What is the main function of the integumentary system in terms of protection?

Cushioning and insulation of deeper organs (D) Signup and view all the answers

What is the process of separating whole blood into its components for analysis?

Fractionation (C) Signup and view all the answers

What is the role of Merkel cells in the epidermis?

Connection to sensory nerve endings (D) Signup and view all the answers

What is the term for the clear layer of the epidermis?

Stratum lucidum (A) Signup and view all the answers

What is the function of the stratum granulosum layer of the epidermis?

Protection against abrasion and penetration (C) Signup and view all the answers

What is the main source of skin colour in individuals with low levels of melanocytes?

Hemoglobin (A) Signup and view all the answers

What is the precursor molecule used by melanocytes to produce melanin?

Tyrosine (B) Signup and view all the answers

What type of plexus is responsible for the capillary network from small arteries in the papillary layer?

Papillary plexus (D) Signup and view all the answers

What is the term for the damage to blood vessels that causes black and blue lesions?

Contusion (C) Signup and view all the answers

Which of the following is related to the dermal circulation?

All of the above (D) Signup and view all the answers

What is the term for the network of blood vessels along the reticular layer?

Cutaneous plexus (B) Signup and view all the answers

What is the function of the nerve fibers in the dermal circulation?