41 - Venous sinuses of Brain

40 - Pelvic diaphragm

The pelvic floor or pelvic diaphragm is composed of muscle fibers of the levator ani, the coccygeus(ishciococcygeus), and associated connective tissue which span the area underneath the pelvis. The pelvic diaphragm is a muscular partition formed by the levatores ani and coccygei, with which may be included the parietal pelvic fascia on their upper and lower aspects. The pelvic floor separates

39 - Urogenital diaphragm

Most of the support of the perineum is provided by the pelvic and urogenital diaphragms.


The urogenital diaphragm is external to the pelvic diaphragm and includes the triangular area between the ischial tuberosities and the symphysis. The urogenital diaphragm is made up of the deep transverse perineal muscles, the constrictor of the urethra, and the internal and external fascial coverings (

38 - Perineal body

The perineal body (or central tendon of perineum) is a pyramidal fibromuscular mass in the middle line of the perineum at the junction between the urogenital triangle and the anal triangle . It is found in both males and females. In males, it is found between the bulb of penis and the anus; in females, is found between the vagina and anus, and about 1.25 cm in front of the latter.

The perineal

37 - Muscles of Perineum/Urogenital region

SUPERFICIAL MUSCLES OF PERINEUM :
1. Superficial Transverse perinei
2. Bulbospongiosus (Bulbocavernosus in older textbooks)
3. Ischiocavernosus

DEEP MUSCLES OF PERINEUM :
1. Deep Transverse Perinei
2. Sphincter urethrae

37 - Skull Foramina

1. Anterior Palatine Foramen
2. Palatine Process of Maxilla
3. Palatine
4. Greater Palatine Foramen
5. Lesser Palatine Foramen
6. Pterygoid Processes of Sphenoid
7. Zygomatic Process
8. Squamous Part of Temporal Bone
9. Mandibular Fossa
10. Styloid Process
11. Stylomastoid Foramen
12. Mastoid Process
13. Mastoid Foramen
14. Superior Nuchal Line
15. External Occipital