Heart and Circulatory

Systemic circulation

Systemic circulation

________: used to supply oxygen and nutrients to organs and removes waste.

Lymphatic tissue

________- produces lymphocytes like b and t cells.

Cardiac cycle

________- series of events from the beginning of one heartbeat to the beginning of the next; consists of a series of changes in:

Filtration

________ (pressure)- allows plasma and dissolve nutrients to enter tissues.

Hepatic portal circulation

________- veins from digestive system do not directly drain to the vena cava; they drain to the liver instead; allows liver to remove items ingested before returning to the heart (e.g.

Circulation

________: needed to deliver oxygen, nutrients and remove toxins.

Pressue

________: comes from the volume of blood and muscle contractions.

Aortic

________ valve- between left ventri and aorta; blood stays in aorta.

Capillaries

________- link between arterioles to venules; exchange vessels; have extremely thin walls and small diameters which allows for diffusion and filtration.

Purkinje fibers

________- signal finally arrives along the muscular walls of each ventricle.

Diffusion

________ (conc)- allows co2 to move from tissues to blood.

least abundant secretes

Basophils: ________ substances to help reduce blood clotting during inflammation.

Anticoagulants

________- released some cells (like basophils) to prevent the formatin of fibrin.

Circle of willis

________- arteries that supplies the brain.

Contractility

________- force with which ventricular ejection occurs; stronger muscle means more forceful contraction.

Cardiac conduction

________- heart generates its own electrical impulses; these impulses give the signal for heart muscles to contract and move blood through the heart.

Oxygen

________ binds to hemoglobin, removes carbon dioxide.

Contractions of myocardium

________: reason why blood moves between chambers and into vessels.

Chemoreceptors

________: aorta, heart arteries and medulla; gasses and pH.

Hemopoeisis

________- formation of blood cells.

thoracic cavity

Heart is located in ________ in the mediastinum.

Cardiac output

________: amount of blood heart pumps in 1 minute.

Semilunar valves

________- prevents backflow from the great arteries to the ventric; ensures blood flows right direction.

Venules

________- smallest veins; collect blood from capillaries.

Resistance

________ to flow results from friction of blood against walls of vessels.

Capillary beds

________- capillaries are organized into this with arterioles on one side and venules on the other.

Aortic arch

________- supply the head, neck and arms.

Endocardium

________- inner epithelial lining.

DEOXY blood

Right ventri- pumps ________ to lungs.

Vena cava vessels

________: carries deoxy blood to the heart from the body; empties into right atrium.

discharge blood

Heart chambers: receive and ________.

Pulmonary veins

________- carry blood to the heart to left atrium from the lungs; oxy blood.

Arterioles

________- smallest artery; controls blood entering organs and blood pressure.

Aorta vessels

________: carries oxy blood to every organ into body (Away from heart); leaves from the left ventri.

Proprioreceptors

________: muscles and joints; physical activity.

Preload

________- amount of tension in ventri muscle BEFORE it contracts; more blood means more stretch.

Pulmonary circ

________- delivers deox blood to lungs to pick up more oxygen and expel co2.

Eosinophils

________: allergic reactions and parasitic infections.

Tunica

________ externa- outer; strong connective tissue for support and protection.

Osmosis→ colloid osmotic pressure

________: allows tissue fluid and waste into capillaries.

Blood flow

________- normal blood flow prevents enzymes from forming fibrin.

Systemic circ

________- delivers oxy blood to tissues in the whole body along w nutrients, hormones, etc.