| 영문 | smooth muscle | 한글 | 민무늬근육, 평활근육 |
|---|---|---|---|
| 설명 | 근육 중에서 가로무늬가 없는 근. 가로무늬근에 대응되는 말이다. 척추동물에서는 심장근 이외의 내장근은 모두가 민무늬근이다. 많은 내장장기의 벽에 분포되어 있으며, 대개 돌림층과 세로층의 두 층으로 배열되어 있다. 소화관이나 요관 같은 관모양의 구조에서는 꿈틀운동을 일으켜 내용물이 아래로 내려가게 하는 작용을 한다. 항문관, 위, 요도 등에서는 돌림층의 근육이 특히 두꺼워져 내용물이 내려가는 것을 조절하는 조임근육이 형성되어 있다. 혈관에는 돌림층만 있으며, 혈관을 수축하여 혈액을 쥐어짜는 작용을 한다. 또한 자율신경의 지배를 받으며, 우리의 의지와 관계없이 작용한다. |
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| 영문 | voluntary muscle | 한글 | 수의근 |
|---|---|---|---|
| 설명 | 의지의 힘으로 움직일 수 있는 근육. 골격근 외에 피부 내의 피근, 관절주머니에 부착하고 있는 관절근 등이 여기에 속한다. 수의근의 근섬유에는 가로무늬가 있으므로 가로무늬근이라고도 하나, 심장근은 가로 무늬가 있어도 수의근이 아니므로 수의근과 가로무늬근은 동의어는 아니다. 수의근의 운동은 민무늬근보다 빠르다. 수의근이라 해도 골격근 등은 근육무리로서 움직일 수 있으나, 개개의 근육은 따로따로 마음대로 움직이게 할 수 없다. 귓바퀴근육은 사람의 경우 발육이 나빠 마음대로 움직이게 하기 어렵다. |
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| 영문 | facial muscle | 한글 | 얼굴근육 |
|---|---|---|---|
| 설명 | 얼굴의 피부를 움직이고 이에 부착되어 있는 얼굴신경의 공급을 받는 수많은 근육을 포함하는 얼굴표정근이나 모방근. |
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| SOA-MCA | superficial occipital artery to middle cerebral artery |
|---|---|
| SPK | serum pyruvate kinase; superficial punctate keratitis |
| SSM | subsynaptic membrane; superficial spreading melanoma |
| STA | second trimester abortion; serum thrombotic accelerator; superficial temporal artery |
| STA-MCA | superficial temporal artery to middle cerebral artery |
| superficial | 1. Cursory; not thorough. 2. Pertaining to or situated near the surface. Synonym: superficialis. Origin: L. Superficialis, fr. Superficies, surface (05 Mar 2000) |
|---|---|
| superficial angioma | <dermatology> Red or purple-coloured vascular skin markings that develop shortly after birth. Most are usually painless and benign and sharply demarcated from surrounding skin, usually located on the head and neck, and grow rapidly. It is caused by proliferation of immature capillary vessels in active stroma, and is usually present at birth or occurs within the first two or three months of life. Some lesions (cavernous haemangioma) will disappear or become harder to see as the child approaches school age. Localised steroid injections have been used successfully to reduce the size of a birthmark but generally they undergo spontaneous regression and involution without scarring and normally require no treatment. (07 Mar 2000) |
| superficial back muscles | Muscles originating from the vertebral column and having their fleshy bellies located in the back, but inserting onto the appendicular skeleton of the upper limb or the ribs. They are not innervated by dorsal primary rami of spinal nerves, as are the deep or true muscles of the back; includes the trapezius muscle (innervated by spinal accessory nerve) and latissimus dorsi, rhomboids, levator scapulae, and thoracic muscles (innervated by ventral primary rami of spinal nerves, or derivatives thereof). (05 Mar 2000) |
| superficial brachial artery | <anatomy, artery> An occasional variation in which the brachial artery lies superficial to the median nerve in the arm. Synonym: arteria brachialis superficialis. (05 Mar 2000) |
| superficial branch | Branch which passes above or closer to surface; usually in contrast to a deep branch. Synonym: ramus superficialis. (05 Mar 2000) |
| superficial branch of the lateral plantar nerve | <anatomy, nerve> Mostly cutaneous branch to skin of small and lateral half of fourth toes and lateral side of sole of foot, but also supplies the flexor digiti minimi brevis muscle and the most lateral dorsal and plantar interosseous muscles. Synonym: ramus superficialis nervi plantaris lateralis. (05 Mar 2000) |
| superficial branch of the medial plantar artery | <anatomy, artery> Gives rise to superficial digital arteries of medial three toes. Synonym: ramus superficialis arteriae plantaris medialis. (05 Mar 2000) |
| superficial branch of the radial nerve | <anatomy, nerve> Cutaneous terminal branch (with deep branch) which runs under cover of brachioradialis muscle to wrist, then supplies skin of proximal portion of the dorsal aspects of thumb, index, middle and lateral half of ring fingers and the portion of the dorsum of the hand located proximally. Synonym: ramus superficialis nervi radialis. (05 Mar 2000) |
| superficial branch of the superior gluteal artery | <anatomy, artery> To upper gluteus maximus muscle. Synonym: ramus superficialis arteriae gluteae superioris. (05 Mar 2000) |
| superficial branch of the transverse cervical artery | <anatomy, artery> Branch of transverse cervical artery which accompanies the spinal accessory nerve on the deep surface of the trapezius muscle. Alternatively arises as a direct branch of the thyrocervical trunk, in which case it is called the superficial cervical artery. (05 Mar 2000) |
| superficial branch of the ulnar nerve | <anatomy, nerve> Branch supplying skin of palmar aspect of little and medial half of ring fingers, the portion of the palm proximal to them and the palmaris brevis muscle. Synonym: ramus superficialis nervi ulnaris. (05 Mar 2000) |
| superficial burn | A burn involving only the epidermis and causing erythema and oedema without vesiculation. Synonym: superficial burn. (05 Mar 2000) |
| superficial cardiac plexus | The superficial and smaller subdivision of the cardiac plexus, formed by the left superior cardiac nerves from the left vagus and cervical sympathetic trunk; it is found beneath the aortic arch, between the arch and the bifurcation of the pulmonary trunk. Synonym: plexus cardiacus superficialis. (05 Mar 2000) |
| superficial cerebral veins | The veins on the superficial surface of the cerebral hemispheres; they comprise three groups: superior, middle, and inferior. Synonym: venae cerebri superficiales. (05 Mar 2000) |
| superficial cervical artery | <anatomy, artery> Origin, branch of thyrocervical trunk, running with spinal accessory nerve deep to trapezius muscle. See: superficial branch of the transverse cervical artery. Synonym: arteria cervicalis superficialis. (05 Mar 2000) |