To see the difference between <span>biped and a quadruped,</span> let's compare the skeletons of the man (biped) and the horse (quadruped):
*The man has the bigger pelvis: he has to bear the weight of the body.*The scapula is smaller.*The bones of the hind leg bigger.*The forearms more mobile.*The man has the spine that attaches under the skull.*And the tail that has completely regressed.
the man has adapted to standing and biped (he walks on 2 feet): his hind legs are reinforced.
It is d) to continue the species!!
hope this helps :)
Lymph traveling from the left arm would enter the venous circulation via the thoracic duct.
<h3>
What is thoracic duct?</h3>
- The largest lymphatic channel in the body's lymphatic system is the thoracic duct, commonly known as van Hoorne's canal.
- Adults have an average length of 40 cm, and their abdominal origin is about 5 mm wide.
- The thoracic duct runs from the root of the neck to the twelfth thoracic vertebra.
- The thoracic duct enters the posterior mediastinum, remaining to the right of the vertebral column, by ascending via the diaphragm's aortic hiatus.
- At the T7 vertebral level, it runs posterior to the esophagus before crossing over to the left side of the thorax at the T5 vertebral level.
- The primary lymphatic channel for the return of chyle/lymph to the systemic venous system is the thoracic duct.
- It drains lymph from the left side of the face and neck, left hemithorax, left upper limb, and both lower limbs.
Learn more about thoracic duct here:
brainly.com/question/19241374
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