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消化系统 — 图库照片

消化系统 — 图库图片

在人体的消化系统消化的过程中有几个阶段，第一次开始在嘴里 （口腔).

 — 照片作者 Edustock

图库图片关键词:

同一系列:

大肠是脊椎动物消化系统的最后一部分。水在这里被吸收，剩余的废物被储存为粪便，然后被排便清除.
大肠癌的交集 — 图库照片
The skeleton is the body part that forms the supporting structure of an organism. In the human digestive system, the process of digestion has many stages, the first of which starts in the mouth (oral cavity).
骨架和消化系统 — 图库照片
在人体的消化系统消化的过程中有几个阶段，第一次开始在嘴里 （口腔).
人类消化系统 — 图库照片
The skeleton is the body part that forms the supporting structure of an organism. In the human digestive system, the process of digestion has many stages, the first of which starts in the mouth (oral cavity).
骨架和消化系统 — 图库照片
The kidneys are bean-shaped organs that serve several essential regulatory roles in vertebrates. They remove excess organic molecules from the blood, and it is by this action that their best-known function is performed.
肾与肾上腺 — 图库照片
The kidneys are bean-shaped organs that serve several essential regulatory roles in vertebrates. They remove excess organic molecules from the blood, and it is by this action that their best-known function is performed.
肾 — 图库照片
The kidneys are bean-shaped organs that serve several essential regulatory roles in vertebrates. They remove excess organic molecules from the blood, and it is by this action that their best-known function is performed.
肾 — 图库照片
肌肉是大多数动物的软组织。肌肉细胞含有蛋白丝的肌酸和肌苷，相互滑动，产生收缩，改变细胞的长度和形状.
肌肉 — 图库照片
骨架是形成一个有机体的支撑结构的身体部分。神经是轴突 (神经元的细长的投影) 在周围神经系统封闭、 索样束.
骨骼与神经 — 图库照片
The human skull is the skull of the human. It is a bony structure, the head in the skeleton, which supports the structures of the face and forms a cavity for the brain. Organs are composed of main tissue, parenchyma, and "sporadic" tissues, stroma.
颅骨缺损器官 — 图库照片
中枢神经系统是协调其自愿和非自愿的行动，并将身体的不同部位之间的信号传输的一种动物身体的一部分.
神经紧张系统 — 图库照片
中枢神经系统是协调其自愿和非自愿的行动，并将身体的不同部位之间的信号传输的一种动物身体的一部分.
神经紧张系统 — 图库照片
《人脸》是Bbc的4个部分系列，探讨面部美、表情和名望背后的科学.
面交岔点 — 图库照片
The skeleton is the body part that forms the supporting structure of an organism. In the circulatory system, veins (from the Latin vena) are blood vessels that carry blood toward the heart.
与静脉骨架 — 图库照片
The human body includes the entire structure of a human being and comprises a head, neck, trunk, arms and hands, legs and feet. Every part of the body is composed of various types of cell. Muscle is a soft tissue found in most animals.
人体解剖肌肉 — 图库照片
The human brain has the same general structure as the brains of other mammals, but has a more developed cerebral cortex than any other.
脑底部一侧 — 图库照片

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