any of the hard pieces making up the skeleton in humans and some animals

骨 (ほね), ボーン
a place in the body where two bones meet, enabling one of them to bend or move around

関節(かんせつ), ジョイント
an elastic tissue that supports or connects joints in an infant and turns into skeleton during growth

軟骨 (なんこつ), カルチラージ (かるちらーじ)
(anatomy) a strong band of tissue which connects two bones or cartilages or keeps organs in place

靭帯(じんたい), 帯(おび)
a fluid-filled sac that reduces friction between tissues such as bones, tendons, and muscles

滑液胞(かつえきほう), 滑液嚢(かつえきのう)
the central part of the skeleton that includes the skull, vertebral column, and ribcage

軸骨格, 中軸骨格
a single muscle that is located along the central axis of the body, including the head, neck, and trunk

軸筋 (じくきん), 軸性筋 (じくせいきん)
a tendon in the leg that attaches the muscles of the calf to the bone of the heel

アキレス腱, アキレスてん
(anatomy) an elastic cord or band that connects a muscle to a bone

腱 (けん), 筋 (きん)
the bony structure that surrounds and provides protection for a person's or animal's brain

頭蓋骨(ずがいこつ), 頭骨(とうこつ)
a piece of body tissue that is made tight or relaxed when we want to move a particular part of our body

筋肉(きんにく), マッスル
(anatomy) a muscle that moves a part of the body away from its normal position by contraction

外転筋, アブダクター
a line of connected bones going down from your neck to tail bone in the middle of the back

脊椎(せきつい), 背骨(せぼね)
the large muscle at the front of the upper part of the arm, which flexes the forearm

上腕二頭筋, バイセップス
a long flat bone at the center of the chest that connects the ribs and the shoulder girdle

胸骨 (きょうこつ), 胸中央骨 (むねちゅうおうこつ)
the bone that is just below the eye

頬骨(ほおぼね), 頬骨(ほほぼね)
(anatomy) the structure that encloses the inner surface of the eye which consists of the muscle which makes the eye move

毛様体, 虹彩体
(anatomy) a bone of the shoulder girdle that connects the breastbone to the shoulder bone

鎖骨, クラックル
either of the pair of bones that go across the top of the chest from the base of the neck to the shoulders

鎖骨(さこつ), クレイボーン
(anatomy) the bone structure that surrounds and protects the brain

頭蓋骨(ずがいこつ), 頭蓋(ずがい)
(anatomy) a large muscle, triangular in shape that covers the shoulder joint and helps the arm to abduct and rotate

三角筋, デルタ筋
a muscle that helps a body part or limb be stretched out by contraction

伸筋(しんきん), エクステンサー
(anatomy) the longest bone in the top part of the human leg between the hip and the knee

大腿骨(だいたいこつ), 大腿(だいたい)
(anatomy) the outer and narrower of the two bones between the ankle and the knee

腓骨(ひこつ), 腓(はぎ)
(anatomy) a muscle that allows one to bend a limb or body part by contraction

屈筋 (くっきん), フレクサー
either of the bones that form the jaw, particularly the lower jaw

顎骨(がっこつ), 下顎骨(したあごこつ)
(anatomy) (zoology) either half of the jawbone, especially the lower jawbone that helps a vertebrate open and close its mouth

下顎骨(かがくこつ), 顎(あご)
(biology) the overall arrangement or the system of muscles in a human or an animal's body

筋肉系, 筋構造
(anatomy) the trapezoidal bone that is at the base and lower back of the cranium, though which the spinal cord passes

後頭骨, 後頭部の骨
the singular bone located at the front of the skull, forming the forehead and upper eye sockets for structural support and protection

前頭骨(ぜんとうこつ), フロントボーン
a cranial bone that forms the sides and roof of the skull, offering protection for the brain

頭頂骨(とうちょうこつ), 頭部骨(とうぶこつ)
a butterfly-shaped bone, contributing to its structure and housing important structures

蝶形骨, ちょうけいこつ
a cranial bone located on the sides and base of the skull, housing the ear structures and contributing to jaw movement

側頭骨 (がくとうこつ), 側頭部の骨 (がくとうぶのこつ)
a facial bone that forms the prominence of the cheek and connects various other facial bones

頬骨(ほおぼね), 頬杖骨(ほおづえぼね)
a facial bone that contributes to the structure of the cheek and forms part of the eye socket

頬骨 (ほおぼね), 頬部骨 (ほおぶこつ)
a facial bone that forms the central part of the face, supporting the upper teeth

上顎骨 (じょうがくこつ), マキシラ (まきしら)
(anatomy) a small bone triangular in shape that covers and protects the front part of the knee joint

膝蓋骨(しつがいこつ), パテラ
(anatomy) the large round bone structure that the limbs and the spine are joined to, which also protects the abdominal organs

骨盤 (こつばん), ペルビス
(anatomy) any of the four large muscles at the front of the thigh that allow the knee joint to stretch

大腿四頭筋, クアドラセプス
(anatomy) the larger and thicker bone of the human forearm extending from the elbow to the thumb side of the wrist

橈骨(とうこつ), 半径(はんけい)
each of the curved bones surrounding the chest to protect the organs inside

肋骨 (ろっこつ), リブ
(anatomy) the bony structure in the chest formed by the ribs which protects organs in the thoracic cavity

肋骨, 肋骨格
(anatomy) a large bone at the lower part of the spinal column between the two hip bones of the pelvis

仙骨, サクラム
the inner and larger bone of the pair of bones between the ankle and the knee

脛骨(けいこつ), シンボーン
(anatomy) each of the pair of triangular bones that connect the humerus to the clavicle

肩甲骨 (けんこうこつ), 肩の骨 (かたのほね)
each of the pair of triangular bones that connect the upper arm bone with the collar bone

肩甲骨, けんこうこつ
an elastic cord or band that connects a muscle to a bone

腱(けん), 腱索(けんさく)
the structure of bones supporting the body of an animal or a person

骨格 (こっかく), スケルトン
the row of small bones that are joined together down the center of the back of the body

脊髄 (せきずい), 背骨 (せぼね)
(anatomy) a ring of muscle that can open or close an opening, such as anus, in the body

筋肉の環(きんにくのわ), 括約筋(かつやくきん)
(anatomy) a long flat bone at the center of the chest that connects the ribs to the shoulder girdle

胸骨, ステルナ
the small triangular bone at the end of the spinal column in humans or tailless primates

尾骨(びこつ), テイルボーン
(anatomy) any of the cluster of seven small bones in the foot between the ankle and upper foot

足根骨 (あしくるぶしこつ), タルサル骨 (タルサルこつ)
the longest bone in the human skeleton which is between the hip and the knee

大腿骨, だいたいこつ
(anatomy) the inner and larger of the two bones between the ankle and the knee

脛骨(けいこつ), チバ(ちば)
(anatomy) the three-headed muscle of the arm that functions as the extensor of the elbow joint

三頭筋, トライセプス
(anatomy) the thinner and longer bone of the human forearm extending from the elbow to the wrist

尺骨, う尺骨
(anatomy) any of the bony segments and cartilages of the spinal column

椎骨(ついこつ), 脊椎骨(せきついこつ)
a small bone found in the middle ear that helps transmit sound vibrations and facilitate hearing

耳小骨(みしょうこつ), 耳の小さな骨(みのちいさなほね)
