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Plant Open The Heart Circulation or Closed Vessels Blood 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 Type of plant without vascular tissue mosses 2 Specialized vasular tissues in plants Xylem and phloem Explain the processes the allows for the movement of water in plants. Cohesion-of water molecules pulls the water molecules together Adhesion allows the water molecules to stick to the vessels. Describe the movement of sugars through a plant Pressure flow hypothesisdissolved sugars move through the phloem from sources (high concentration) to sinks (low concentration) Describe the movement of water in a plant Water in the soil moves via osmosis into root hairs (large surface areas) to the xylem vessels in the roots to stem xylem to leaf to photosynthesizing cells to the atmosphere The way a paramecium circulates substances? Vacuole Type of circulatory system of insects Open Circulatory System Type of circulatory system in which the composition of the fluid surrounding is the same as the fluid being transported? Open circulatory system Type of system that exchanges nutrients between fluids and cells Both open and closed circulatory systems Describe the 3 components of the closed cardiovascular system Heart: artia-receive the blood ventricle pump the blood Blood Vessels: Arteries-carry blood away from the heart Veins-carry blood towards the heart Capillaries- very small allow for exchange of substances Blood: Carries the substances What are the upper chambers of the heart called? . Atria Where each heartbeat starts Pacemaker Contraction of the ventricle Ventricular Systole Two proteins that control the molecular motor of the heart muscle Actin and myosin filaments Describe the flow of blood through the human heart Vena cava-Right atria-right ventricle-pulmonary artery-lungspulmonary vein-left artia-left ventricle-aorta Vessels with more muscle and elasticity arteries Vessels with valves Veins Force that helps blood return from the head Gravity Movement of blood in the veins is helped by pressure from the __ Adjacent muscles How is a healthy blood pressure maintained Complex interaction involving hormones, nervous, excretory and circulatory systems. Nerves connect pressure receptors in the aorta and the artery leading to the head to cardiaccontrol centers in the brain. Emotions,and chmeical input, especailly carbon dioxide concentration all effect BP Blood cells that transport oxygen RBC or erythrocytes Where blood cells are produced Marrow of long bones Type of leukocyte that surround and take in cells macrophage List 5 things in lymph White blood cells, water, large protein molecules, salts, Describe how a clot forms. Platelets contact damaged tissue, become sticky and attract more platelets forming a plug. They release a substance the form prothrombin actavator which in the presence of Ca cause plasma protrombin to thrombin. Thrombin acts as an enzyme to convert soluble fibrinogen to insoluble fibrin. Fibrin forms a network of threads to trap platelets and form a scab.