8.1 Transports Systems In Multicellular Animals Flashcards
What is the primary function of transport systems in multicellular animals?
To transport nutrients, gases, hormones, and waste products throughout the body.
True or False: All multicellular organisms have a circulatory system.
False
Fill in the blank: The three main components of a circulatory system are the ______, the ______, and the ______.
heart, blood vessels, blood
What type of circulatory system do mammals have?
A closed circulatory system.
Multiple choice: Which of the following is NOT a function of blood?
A) Transporting oxygen B) Regulating body temperature C) Producing hormones D) Fighting infections
What are the two main types of blood circulation in mammals?
Pulmonary circulation and systemic circulation.
True or False: The heart has four chambers in mammals.
True
What is the role of the pulmonary artery?
To carry deoxygenated blood from the heart to the lungs.
Fill in the blank: The ______ is responsible for pumping oxygenated blood to the body.
left ventricle
Multiple choice: Which vessel carries oxygen-rich blood away from the heart?
A) Vein B) Artery C) Capillary D) Venule
What is the function of capillaries?
To facilitate the exchange of gases, nutrients, and wastes between blood and tissues.
True or False: Veins have thicker walls than arteries.
False
What is the main role of red blood cells?
To transport oxygen from the lungs to the body and carbon dioxide from the body to the lungs.
Fill in the blank: The liquid component of blood is called ______.
plasma
Multiple choice: Which component of blood is primarily involved in clotting?
A) Red blood cells B) White blood cells C) Platelets D) Plasma
What is the function of white blood cells?
To protect the body against infection and foreign invaders.
True or False: The heart’s pacemaker is known as the sinoatrial (SA) node.
True
What is the function of the aorta?
To distribute oxygenated blood from the heart to the rest of the body.
Fill in the blank: The ______ system helps to transport lymph, a fluid containing infection-fighting white blood cells.
lymphatic
Multiple choice: Which of the following is a characteristic of arteries?
A) They carry blood towards the heart B) They have thinner walls C) They have elastic walls D) They carry deoxygenated blood
What is the term for the pressure exerted by circulating blood on the walls of blood vessels?
Blood pressure
True or False: The circulatory system is responsible for thermoregulation.
True
What is the primary difference between open and closed circulatory systems?
In an open system, blood is not always contained within vessels, while in a closed system, blood is always contained within vessels.
Fill in the blank: The ______ system transports hormones through the bloodstream.
endocrine
Multiple choice: Which of the following structures in the heart prevents backflow of blood?
A) Valves B) Septum C) Atria D) Ventricles
