Palatoparyngeal Arch

A fold of tissue that passes from the soft palate to the lateral wall of the pharynx.

Palatoglossal Arch

A fold of tissue that passes from the soft palate to the side of the tongue.

Palate

The bony, muscular part that separates the mouth from the nasal cavity.

Pacemaker

Any rhythmic center responsible for a pace of activity.

Oxytocin

A hormone secreted by the posterior lobe of the pituitary gland; stimulates the contraction of smooth muscles of pregnant uterus and around mammary glands ducts.

Oxyhemohlobin

Hemoglobin that has combined with oxygen.

Ovulation

The release of ova from the ovarian follicle.

Ovaries

The pair of organs in the female pelvic region that produce oca and secrete female sex hormones.