Cervix (disambiguation)

Last updated March 18, 2019

A cervix or collum is a neck, that is, a narrowed region of an object (such as a body or a body part). In anatomy, various body parts are called necks, with the neck (of the body) and the neck of the uterus (the uterine cervix) being major examples. A list of examples includes:

Anatomy The study of the structure of organisms and their parts

Anatomy is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science which deals with the structural organization of living things. It is an old science, having its beginnings in prehistoric times. Anatomy is inherently tied to developmental biology, embryology, comparative anatomy, evolutionary biology, and phylogeny, as these are the processes by which anatomy is generated over immediate (embryology) and long (evolution) timescales. Anatomy and physiology, which study (respectively) the structure and function of organisms and their parts, make a natural pair of related disciplines, and they are often studied together. Human anatomy is one of the essential basic sciences that are applied in medicine.

Neck part of the body, on many terrestrial or secondarily aquatic vertebrates, that distinguishes the head from the torso or trunk

The neck is the part of the body, on many vertebrates, that separates the head from the torso. It contains blood vessels and nerves that supply structures in the head to the body. These in humans include part of the esophagus, the larynx, trachea, and thyroid gland, major blood vessels including the carotid arteries and jugular veins, and the top part of the spinal cord.

The cervix or cervix uteri is the lower part of the uterus in the human female reproductive system. The cervix is usually 2 to 3 cm long and roughly cylindrical in shape, which changes during pregnancy. The narrow, central cervical canal runs along its entire length, connecting the uterine cavity and the lumen of the vagina. The opening into the uterus is called the internal os, and the opening into the vagina is called the external os. The lower part of the cervix, known as the vaginal portion of the cervix, bulges into the top of the vagina. The cervix has been documented anatomically since at least the time of Hippocrates, over 2,000 years ago.

Neck, the narrowed region of the body between the torso and the head
Uterine cervix, usually just called the cervix when the context is implicit
Cervix vesicae urinariae, the neck of the urinary bladder
Cervix cornus dorsalis medullae spinalis or cervix cornus posterioris medullae spinalis, the neck of the posterior grey column (the posterior horn of the spinal cord)
Cervix dentis, the neck of a tooth (a slightly narrowed area where the crown meets the root, such as on a molar tooth)
Cervix (insect anatomy), a membrane that separates the head from the thorax in insects

The posterior grey column of the spinal cord is one of the three grey columns of the spinal cord. It receives several types of sensory information from the body, including fine touch, proprioception, and vibration. This information is sent from receptors of the skin, bones, and joints through sensory neurons whose cell bodies lie in the dorsal root ganglion.

A tooth is a hard, calcified structure found in the jaws of many vertebrates and used to break down food. Some animals, particularly carnivores, also use teeth for hunting or for defensive purposes. The roots of teeth are covered by gums. Teeth are not made of bone, but rather of multiple tissues of varying density and hardness. The cellular tissues that ultimately become teeth originate from the embryonic germ layer, the ectoderm.

The cervix in insects is a membrane that separates the head from the thorax and is composed of structures from both of these. A pair of lateral cervical sclerites are embedded in the cervix.

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An infundibulum is a funnel-shaped cavity or organ.

The uterus or womb is a major female hormone-responsive secondary sex organ of the reproductive system in humans and most other mammals. In the human, the lower end of the uterus, the cervix, opens into the vagina, while the upper end, the fundus, is connected to the fallopian tubes. It is within the uterus that the fetus develops during gestation. In the human embryo, the uterus develops from the paramesonephric ducts which fuse into the single organ known as a simplex uterus. The uterus has different forms in many other animals and in some it exists as two separate uteri known as a duplex uterus.

The femur or thigh bone, is the proximal bone of the hindlimb in tetrapod vertebrates. The head of the femur articulates with the acetabulum in the pelvic bone forming the hip joint, while the distal part of the femur articulates with the tibia and kneecap forming the knee joint. By most measures the femur is the strongest bone in the body. The femur is also the longest bone in the human body.

The digastric muscle is a small muscle located under the jaw. The term "digastric muscle" refers to this specific muscle. However, other muscles that have two separate muscle bellies include the ligament of Treitz, omohyoid, occipitofrontalis.

The splenius cervicis is a muscle in the back of the neck. It arises by a narrow tendinous band from the spinous processes of the third to the sixth thoracic vertebrae; it is inserted, by tendinous fasciculi, into the posterior tubercles of the transverse processes of the upper two or three cervical vertebrae.

The erector spinae or spinal erectors is a set of muscles that straighten and rotate the back.

The posterior triangle is a region of the neck.

The upper extremity, proximal extremity or superior epiphysis of the femur is the part of the femur closest to the pelvic bone and the trunk. It contains the following structures:

The upper or proximal extremity of the humerus consists of the bone's large rounded head joined to the body by a constricted portion called the neck, and two eminences, the greater and lesser tubercles.

The anterior grey column is the front column of grey matter in the spinal cord. It is one of the three grey columns. The anterior grey column contains motor neurons that affect the skeletal muscles while the posterior grey column receives information regarding touch and sensation. The anterior grey column is the column where the cell bodies of alpha motor neurons are located.

The neck is the body part between the head and torso of many animals.

The cervical canal is the spindle-shaped, flattened canal of the cervix, the neck of the uterus.

The uterine cavity is the inside of the uterus.

This article describes the anatomy of the head and neck of the human body, including the brain, bones, muscles, blood vessels, nerves, glands, nose, mouth, teeth, tongue, and throat.

In human female anatomy, the vesico-uterine pouch, also known by various other names, is a second but shallower pouch formed from the peritoneum over the uterus and bladder, continued over the intestinal surface and fundus of the uterus onto its vesical surface, which it covers as far as the junction of the body and cervix uteri, and then to the bladder. This pouch is an important anatomical landmark for chronic endometriosis. Endometrial seeding in this region causes cyclical pain in women of child bearing age. This pouch is also an important factor in a retroverted uterus, which can frequently complicate pregnancies.

This is a list of commonly used terms of location and direction in dentistry. This set of terms provides orientation within the oral cavity, much as anatomical terms of location provide orientation throughout the body.

Collum may refer to:

Cervix (disambiguation)

See also

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