a line of connected bones going down from your neck to tail bone in the middle of the back
脊柱, 脊椎
定期锻炼有助于加强脊柱周围的肌肉。
the front part of the body between the neck and the stomach
胸部, 胸腔
artificial teeth designed to replace missing natural teeth, often used for cosmetic or functional purposes
假牙, 义齿
牙医推荐假牙以提高她的咀嚼能力。
a piece of body tissue that is made tight or relaxed when we want to move a particular part of our body
肌肉
the front part of a person's upper body between the neck and abdomen
胸部, 乳房
the rounded back part of the foot below the ankle
脚跟, 脚后跟
a place in the body where two bones meet, enabling one of them to bend or move around
关节, 接合处
either of the two organs in the chest that allow people and many animals to breathe
a bundle of fibers that carries signals between the brain or spinal cord and other parts of the body
神经, 神经纤维
a distinct part of a person, animal, or plant that performs a particular function
器官, 脏器
the structure of bones supporting the body of an animal or a person
骨架, 骨骼
考古学家仔细检查了古代骨骼。
the bony structure of the head that surrounds and protects the brain
the part of the body between the ribs and hips, usually narrower than the areas above and below it
the part of the body connecting the hand to the forearm
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
any blood vessel, carrying the blood to different organs of body from the heart
动脉, 血管
动脉粥样硬化是一种斑块在动脉内部积聚的病症，可能会限制血流并导致心脏病发作和中风等严重健康问题。
the continuous movement of blood through the heart and blood vessels around the body
循环, 血液循环
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, 颈骨
X光显示锁骨有清晰断裂，需要立即就医。
the firm, pink flesh around the roots of teeth at the top and bottom of the mouth
牙龈, 齿龈
适当的牙齿护理对于保持健康的牙龈至关重要。
the human body or skin, especially considered as physical rather than spiritual
a chemical substance produced in the body of living things influencing growth and affecting the functionality of cells or tissues
激素, 荷尔蒙物质
肾上腺素是一种应激激素，使身体准备好应对“战斗或逃跑”反应。
an arm, leg, wing, flipper, or similar jointed appendage of a person or animal
肢, 四肢
a large organ in the abdomen that performs many metabolic functions, including processing nutrients, producing bile, and removing harmful substances from the blood
肝脏, 肝
the regular beating of the arteries caused by the pumping action of the heart
脉搏, 脉搏
the column of connected bones running down the back that supports the body and protects the spinal cord
脊柱, 脊椎
a group of similar cells that work together to form a particular part of a human, animal, or plant
a blood vessel that carries blood from the body toward the heart
静脉, 血管
the lower part of the body below the chest that contains the digestive and reproductive organs
腹部, 肚子
在她重要的演讲之前，她感到腹部有一种颤动的感觉，这是紧张的明显迹象。
