It starts with oxygen poor blood being pumped from the right ventricle into the pulmonary trunk. The pulmonary trunk divides into right and left pulmonary arteries that subdivide into the lobar arteries in the lungs. The lobar arteries accompany the main bronchi into the lungs and then branches forming arterioles and then pulmonary capillaries that cling to alveoli. Here oxygen moves from the air sacs to the blood, and carbon dioxide from the blood moves to the air sacs. Next, the pulmonary capillary beds drain into venules which join to form two pulmonary veins exiting each lung.
As we continue to make our way to the heart, we merge with the right external iliac vein. This is also another name for the femoral vein, and is also considered a deep vein in the lower leg. Its main responsibility is taking deoxygenated blood from the legs back to the heart. It is located right behind the inguinal ligament in the lower abdomen. The inguinal ligament support the area between the abdomen and the thigh (Inguinal Ligament, n.d.).
(Points : 2) | SA node, AV bundle, bundle branches, AV node, conduction myofibers AV node, SA node, AV bundle, bundle branches, conduction myofibers SA node, AV node, AV bundle, bundle branches, conduction myofibers conduction myofibers, AV bundle, bundle branches, AV node, SA node | 4. (TCO 1) Blood flows from the superior vena cava into the: (Points : 2) | Right Atrium Inferior Vena Cava Left Atrium Right Ventricle | 5. (TCO 1) Blood flows into the coronary arteries from the: (Points : 2) | Descending Aorta Coronary Sinus Ascending Aorta Pulmonary Trunk | 6. (TCO 2)The internal jugular veins receive blood from the: (Points : 2) | superior vena cava. brachiocephalic veins.
Blood flows past the aortic semilunar valve when the contracts. A. left atrium B. right atrium C. left ventricle D. right ventricle 5. Which is true? A. The left atrium contracts before the right atrium.
They also have two pairs of antennae attached to their heads. One median eye and two lateral eyes are also attached. Pincher claw, Mouth Swimmerets, Tail fin, Walking legs, Crusher claw The oxygen that crustaceans inhale goes through very thin gills. Then the oxygen is pumped into the blood. The blood carries the oxygen into the cell, which pass through the entire body.
At the level of the fifth thoracic vertebra it divides into right and left pulmonary arteries, passing into the corresponding lungs. Within the lungs these arteries divide and subdivide into smaller arteries, subsequently becoming arteries and capillaries. It is between the capillaries and the lung tissue that the interchange of gases takes place. In each lung the capillaries carrying oxygenated blood join up and form two vein, so, two pulmonary veins from each lung, therefore becomes four pulmonary veins which return oxygenated blood to the left atrium of the heart. These are the only veins which carry oxygenated blood.
http://www.healthline.com/human-body-maps/tricuspid-valve The Pulmonic Valve: This valve is found between the right ventricle and the lungs. As the deoxygenated blood continues on its journey through the heart from the right ventricle, it makes its exit by way of the pulmonic valve. This structure is a one-way valve with prevents the flow of blood back into the right ventricle once it leaves the heart. http://www.healthline.com/human-body-maps/pulmonary-valve The mitral valve: This valve is located between the left atrium and the left ventricle. As the now oxygenated blood flows back through the left atrium, it does so under increased pressure.
The left side (bicuspid) pumps oxygenated blood from the lungs to the body; the left chamber has a bigger muscular wall than the other chambers and is stronger, so it is able to pump the blood the whole of the body including the head and neck, as it is against the force of gravity. The two sides are separated by a septum. The heart also contains many veins and arteries. Blood is forced up into the Aorta (one of the large arteries) the Aorta splits into two separate parts, one goes up to the head and brain (upper part of the body) and one goes down (to the lower part of the body) Blood travelling around the body is called ‘systemic circulation’. The blood from these arteries feeds the organs and systems (cells & tissues).
About one centimeter from the celiac axis, you find the SMA which supplies the small intestine, cecum and parts of the colon. There are anatomical variations where there can be a common trunk of the celiac artery and SMA. The renal arteries which are right below the SMA, supply blood to the kidneys, supra renal glands and the ureters. Multiple renal arteries are not uncommon bilaterally. The IMA arises from the abdominal
2. Dorsal tubular nerve cord * Develops into the brain and spinal cord of the adult. * in most invert groups; nerve cord is ventral & paired * in chordates the nerve cord is a single dorsal hollow nerve cord * front end usually enlarged to form brain 3. Pharyngeal (gill) slits Water enters through the mouth and passes out through the slits in the pharynx, without going through the digestive system. i. Slits function as suspension-feeding devices in many invertebrate chordates ii.