NEED HELP! Using either a fish or a cat describe the path of an oxygen molecule from the air to a mitochondrion in a muscle cell?
1 Answer
Sep 12, 2017
Let us think of a cat.
Explanation:
- oxygen present in air:
- air breathed in through nostrils:
- air travels along nasal passage: trachea: bronchi:
- air reaches alveoli of lungs:
- oxygen from alveoli diffuses in blood of pulmonary capillaries:
- oxygen binds to hemoglobin molecules of red blood cells:
- oxygenated blood travels via pulmonary veins:
- the blood returns to left atrium of heart:
- then blood enters left ventricle of heart:
- oxygenated blood is pumped through aorta:
- arterial branches arising from aorta distribute oxygenated blood:
- subclavian artery distributes blood to anterior parts and limbs:
- dorsal scapular artery, a branch of subclavian, supplies oxygenated blood to rhomboid muscles present near scapula:
- artery enters the muscle and divides in capillaries:
- oxygen from blood diffuses in muscle cells:
- oxygen diffuses in mitochondria:
- oxygen is used in electron transport system within mitochondria.
