depressor

IPA/dɪˈpresə(r)/
IPA/dɪˈpresər/

depressor — 名詞

  • depressorsingular
  • depressorsplural

1. a set of fibres in the body that, when they tighten, move a body part such as th

1.名詞C2
釋義

降肌

使身體部位向下的肌肉

a set of fibres in the body that, when they tighten, move a body part such as the lip, jaw, or shoulder blade to a lower position

例句

The depressor anguli oris muscle pulls the mouth corners down when a person frowns.

降口角肌這個降肌會在一個人皺眉時，將嘴角往下拉。

depressor + anatomical name for specific facial muscle

Ravindra damaged his depressor labii inferioris in a cycling accident last year.

Ravindra 去年在一場自行車事故中傷到了他的降下唇肌。

同義詞
  • depressor muscle

    fuller term used in anatomical naming, interchangeable with 'depressor' in medicine

反義詞
  • levator

    a muscle that raises a body part upward, the functional opposite of a depressor

用法筆記

Anatomical depressors are named by the body part they lower, e.g. depressor anguli oris (mouth corner depressor). The opposite muscle type is the levator, which raises a part.

常見錯誤

❌A depressor muscle raises the jaw upward.
✅A depressor muscle pulls the jaw downward.
💡Depressor muscles lower body parts; levator muscles raise them.

2. a hand-held device that a doctor or dentist uses to gently push a tissue or body

2.名詞B2
釋義

壓板

手術中推開組織的工具

a hand-held device that a doctor or dentist uses to gently push a tissue or body part aside so that the area underneath becomes visible or reachable

例句

Dr. Liang asked the nurse for a tongue depressor to inspect the patient's throat.

梁醫師向護理師要了一根壓舌板，以便檢查病人的喉嚨。

tongue depressor — most common type

The dentist used a small depressor to move Dahlia's cheek and check her back tooth.

牙醫用一把小壓板將 Dahlia 的臉頰推開，檢查她的後排牙齒。

同義詞
  • retractor

    a surgical tool that holds back tissue; a retractor often has a hooked or bladed shape, while a depressor is usually flat

  • spatula

    a flat tool similar in shape but more often used in a laboratory or pharmacy setting

  • tongue blade

    American English term for a tongue depressor, especially the flat wooden stick

用法筆記

The most common type is the tongue depressor (a flat wooden or metal stick). In surgery, depressors come in various shapes depending on which tissue needs to be moved.

常見錯誤

❌The surgeon used a tongue depressor to open the chest.
✅The surgeon used a rib depressor to move the rib cage aside.
💡Tongue depressors are for the mouth only; larger surgeries need different depressors.

3. a bundle of nerve fibres that carries signals from the brain to slow down or cal

3.名詞C2
釋義

減壓神經

降低器官活動的神經

a bundle of nerve fibres that carries signals from the brain to slow down or calm what an internal body organ does, for example by lowering the heart rate or widening blood vessels

例句

Bao stimulated the depressor nerve of a rat and watched its blood pressure drop.

Bao 刺激了一隻老鼠的減壓神經，看著牠的血壓下降。

depressor nerve + stimulated + animal experiment

Stimulating the depressor nerve of a rabbit causes its blood vessels to widen.

刺激兔子的減壓神經會使其血管擴張。

同義詞
  • inhibitory nerve

    a nerve that reduces or prevents activity; broader in meaning than 'depressor nerve'

  • vagal depressor fibre

    a specific type of depressor nerve found in the vagus nerve system

反義詞
  • accelerator nerve

    a nerve that increases the activity of an organ, opposite in function to a depressor nerve

用法筆記

Depressor nerves work as part of the autonomic nervous system. They are the opposite of accelerator or excitatory nerves, which increase organ activity. The term is most common in physiology textbooks and research contexts.

常見錯誤

❌The depressor nerve sends pain signals from the organ to the brain.
✅The depressor nerve sends calming signals from the brain to the organ.
💡Depressor nerves reduce activity, not carry pain sensations.