a body hormone produced in case of anger, fear, or excitement that makes the heart beat faster and the body react quicker
肾上腺素
a chemical substance produced in the body of living things influencing growth and affecting the functionality of cells or tissues
荷尔蒙
a sack of tissue that is attached to the large intestine and is surgically removed if infected
阑尾
the large muscle at the front of the upper part of the arm, which flexes the forearm
肱二头肌
a long flat bone at the center of the chest that connects the ribs and the shoulder girdle
胸骨
either of the pair of bones that go across the top of the chest from the base of the neck to the shoulders
锁骨
a long, continuous tube in the body through which the food coming from the stomach moves and is passed
肠
a place in the body where two bones meet, enabling one of them to bend or move around
关节
the network of neurons and fibers that interpret stimuli and transmit impulses from the body to the brain
神经系统
the row of small bones that are joined together down the center of the back of the body
脊柱
the rhythmic beating of the blood vessels created when the heart pumps, especially felt on the wrist or at the sides of the neck
脉搏
(anatomy) the bony structure in the chest formed by the ribs which protects organs in the thoracic cavity
胸腔
the bony structure that surrounds and provides protection for a person's or animal's brain
头骨