- what structure receives lymph from lymph vessels and drains into the venous system in the chest area at the junction of the subclavian and internal jugular veins?
- What structure do insects use to deliver air close to each body cell?- saclike lungs - pharynx - elaborate branching air tubes called tracheae - spiracles
- which lymph nodes are found bilaterally in the occiptial region and receives lymph from this area of the scalp?
- lymph nodes are ______-shaped structures grouped in clusters along the connecting lymphatic vessels
- what is the tissue fluid that drains from a surrounding region into the lymphatic system?
- what filters out toxic products from the lymph to prevent their entry into the blood system?
- true/false, lymphatic vessels have valves to prevent backflow of disease
- whaat are part of the immune system and help fight diseases?
- true/false, the tonsillar tissue of the oral cavity is part of the immune system
- lymph from a particular area drains into which classification of nodes?
- During inhalation,- the diaphragm relaxes. - the volume of the thoracic cavity decreases. - air moves up the trachea. - the diaphragm and rib muscles contract. - oxygen molecules move into the lungs, and carbon dioxide molecules move out of the lungs.
- The lungs of reptiles are better developed than those of amphibians because reptiles:- lay shelled eggs. - have a dry, scaly skin. - are larger animals. - use oxygen for cellular processes. - have a higher metabolic rate.
- Movement of O2 from the outside air to respiratory surfaces by breathing is an example of:- diffusion. - active transport. - facilitated diffusion. - bulk flow. - osmosis.
- After blood becomes oxygenated,- it returns to the heart, and is then pumped to the lungs. - it does not return to the heart, but goes directly to the lungs. - it returns to the heart, and is then pumped to body cells. - it does not return to the heart, but goes directly to capillaries that supply the body's cells with oxygen. - it does not return to the heart, but goes to the nose and mouth.
- Which respiratory system characteristics are shared by fish, frogs, jellyfish, and earthworms?- respiratory system with a complex network of tubes - lack of a true circulatory system - internal respiratory structures - gas exchange across a moist respiratory surface - gas exchange across the skin
- All of the following are respiratory surfaces EXCEPT:- alveoli of a raccoon. - skin of an earthworm. - gills of a fish. - tracheae of a fly. - bat wings.
- Hemoglobin- uses ATP to move oxygen from blood to body cells. - is the site of cellular respiration. - is a protein that can bind four molecules of oxygen. - is found in blood plasma. - has five subunits.
- what are mainly parallel with the venous blood vessels but are more numerous?
- what consists of a network of lymphatic vessels linking lymph nodes throughout most of the body?
- Where do air from the nose and air from the mouth join?- larynx - pharynx - bronchioles - bronchi - trachea