mucous plug

plug (plug) an obstructing mass.

---

closing plug  a fibrinous coagulum of blood that fills the defect in the endometrial epithelium created by implantation of the blastocyst.

Dittrich's plugs  masses of fat globules, fatty acid crystals, and bacteria sometimes seen in the bronchi in bronchitis and bronchiectasis.

epithelial plug 

1. a mass of ectodermal cells that temporarily closes an opening in the fetus, particularly in the external nares.

2. a mass of epithelium clogging or obstructing an opening.

mucous plug 

1. a plug formed by secretions of the mucous glands of the cervix uteri and closing the cervical canal during pregnancy.

2. abnormally thick mucus occluding the bronchi and bronchioles.

---

mucous plug

n.

A mass of mucus and cells filling the cervical canal between menstrual periods or during pregnancy.

---

mucous plug,

(in obstetrics) a collection of thick mucus in the uterine cervix that is often expelled at the onset of dilation of the cervix, just before labor begins or in its early hours. The plug may be dry and firm, following the shape of the endocervical canal, but more often it is semifluid and mucoid, streaked with blood.

---

plug

an obstructing mass.

---

epithelial plug

mass of ectodermal cells that temporarily closes the external naris of the fetus.

mucous plug

a plug formed by secretions of mucous glands, of the cervix uteri and closing the cervical canal during pregnancy.