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Baculum of a domestic dog; The arrow points to the bottom groove where the urethra is located. The tip is to the right. Inside the corpus spongiosum lies the baculum.This allows the male dog to enter into the vagina before the erectile tissue is swollen.
When your pregnant dog is about to give birth, she will enter labor. For dogs, this occurs in three stages. First Stage: A pregnant dog’s uterus begins contracting and her cervix dilates. She ...
Baculum of a dog's penis; the arrow shows the urethral sulcus, which is the groove in which the urethra lies. Fossil baculum of a bear from the Miocene. The baculum (pl.: bacula), also known as the penis bone, penile bone, os penis, os genitale, [1] or os priapi, [2] is a bone in the penis of many placental mammals.
When male canines are sexually excited, the bulbus glandis may swell up inside the penile sheath, even if the dog has been neutered. [ 8 ] The bulbus glandis also occurs in the penises of some pinnipeds , including South American fur seals .
Dogs have ear mobility that allows them to rapidly pinpoint the exact location of a sound. Eighteen or more muscles can tilt, rotate, raise, or lower a dog's ear. A dog can identify a sound's location much faster than a human can, as well as hear sounds at four times the distance. [41] Dogs can lose their hearing from age or an ear infection. [42]
The uterus is located in the middle of the pelvic cavity, in the frontal plane (due to the broad ligament of the uterus). The fundus does not extend above the linea terminalis, while the vaginal part of the cervix does not extend below the interspinal line. The uterus is mobile and moves posteriorly under the pressure of a full bladder, or ...
The cervical canal is generally lined by "endocervical mucosa" which consists of a single layer of mucinous columnar epithelium. However, after menopause, the functional squamocolumnar junction moves into the cervical canal, and hence the distal part of the cervical canal may be lined by stratified squamous epithelium (conforming to a "type 3 transformation zone").
They also provide attachment to the ovarian ligament, which is located below the fallopian tube at the back, while the round ligament of uterus is located below the tube at the front. The uterine horns are far more prominent in other animals (such as cows [1] and cats [2]) than they are in humans. In the cat, implantation of the embryo occurs ...