China
Africa
Explore chapters and articles related to this topic
Trunk Muscles
Published in Eve K. Boyle, Vondel S. E. Mahon, Rui Diogo, Handbook of Muscle Variations and Anomalies in Humans, 2022
Eve K. Boyle, Vondel S. E. Mahon, Rui Diogo, Rowan Sherwood
In males, bulbospongiosus is comprised of two parts joined by a median fibrous raphe (Standring 2016). The fibers blend with the perineal body and are attached to the superficial transverse perineal muscle and the external anal sphincter (Standring 2016). The middle fibers encircle the bulb of the penis and corpus spongiosum (Standring 2016). The anterior fibers extend over and insert partly into the sides of the corpus cavernosum, and also partially insert into a tendinous expansion over the dorsal vessels of the penis (Standring 2016). In females, bulbospongiosus attaches to the perineal body but the muscle on each side of the body is separate (Standring 2016). It covers the superficial portions of the vestibular bulbs and greater vestibular glands (Standring 2016). It attaches onto the corpus cavernosum clitoridis (Standring 2016).
Embryology, Anatomy, and Physiology of the Male Reproductive System
Published in Karl H. Pang, Nadir I. Osman, James W.F. Catto, Christopher R. Chapple, Basic Urological Sciences, 2021
The Bulbospongiosus muscle covers the penis bulb.The bulb continues as the corpus spongiosum.Lies ventrally between the two dorsal corpora cavernosa, forming the penile shaft.The corpus spongiosum continues distally, expands to form the glans, and covers the corporal tips.
The Conception Vessel (CV)
Published in Narda G. Robinson, Interactive Medical Acupuncture Anatomy, 2016
Bulbospongiosus muscle: Supports the perineal body. In males, it assists erection by compressing outflow veins and pushing blood into the penis. It also compresses the bulb of the penis after ejaculation to expel the final drops of urine or semen. In females, it supplies the sphincter of the vagina and assists in clitoral erection.
Comparison of self-reported ability to perform Kegel’s exercise pre- and post-coital penetration in postpartum women
Published in Libyan Journal of Medicine, 2023
Chidiebele Petronilla Ojukwu, Ginikachukwu Theresa Nsoke, Stephen Ede, Anne Uruchi Ezeigwe, Sylvester Caesar Chukwu, Emelie Morris Anekwu
Coital penetration involves physical contact and pressure within the vaginal walls and its surrounding muscles, considering that structurally and functionally, some of the pelvic muscles are closely related to the vagina and they work as a functional unit [30,31]. The bulbospongiosus muscle lies on its lateral wall while the transverse (deep and superficial) perineal muscle lies posteriorly. These muscles support the structure of the vagina and in conjunction with other pelvic floor muscles (PFM), partake in the rhythmic contractions in the perineal region during orgasm. It is possible that the thrusting movement of the penis during sexual intercourse will lead to intermittent stretching of these muscles which may affect their contractile abilities. Kelleher and Cardozo [32] posited that penetrative intercourse in humans is associated with considerable displacement of the female pelvic anatomy.
G protein-coupled estrogen receptor (GPER/GPR30) levels in pelvic floor muscles and its association with estrogen status in female rabbits
Published in Gynecological Endocrinology, 2022
Sharet Y. Rodríguez-Jaimes, Guadalupe C. Hernández-Hernández, Laura G. Hernández-Aragón, Octavio Sánchez-García, Margarita Martínez-Gómez, Estela Cuevas-Romero, Francisco Castelán
The bulbospongiosus (Bsm) and pubococcygeus (Pcm) are pelvic floor muscles (PFM) that assist differentially in micturition of female rabbits, the former muscle at the voiding and the latter one at the storage [13]. The Bsm and Pcm express ERα and ERβ in connective tissue and myofibers [14]. The number of ERα and -β immunoreactive (ir) myonuclei increases in the Pcm of chronically-ovariectomized rabbits receiving or not exogenous estrogen, while the Bsm remains unchanged [15]. Estrogens prevent the ovariectomy-induced fall in contraction responses of Pcm and coccygeus muscles and protect only the Pcm response against hypoxia [16]. Furthermore, the reflex activation of the Pcm and Bsm during micturition is modulated differentially by estrogens in anesthetized rabbits [17]. Overall, the estrogen responsiveness of the PFM seems to be critical for assisting pelvic floor functions in rabbits.
Pathobiology of ischiocavernosus and bulbospongiosus muscles in long-term diabetic male rats and its implication on erectile dysfunction
Published in The Aging Male, 2020
Prakash Seppan, Ibrahim Muhammed, Zafar Iqbal Khan Mohammad, Sathya Bharathy Sathyanathan
The initiation and maintenance of penile erection depend on nerve control of the vasculature [25], concurrently, the integrity of the striated muscle system, i.e. ischiocavernosus (IC) and bulbospongiosus (BS) is mandatory for rigid erection. The penile bulb is surrounded by the BS, the penile crura and proximal part of the shaft by the IC [26,27]. The BS arises from the perineal body, and its anterior fibers end in a tendinous expansion, which extends over the dorsal aspect of the penis covering the dorsal vessels [26]. The BS assists in penile erection by compressing the erectile tissue of the penile bulb and the deep dorsal vein of the penis [28]. The IC arises from the ischial tuberosity and ramus, and its fleshy fibers end in an aponeurosis attached to the sides and undersurface of the crus penis [26]. The contractions of muscles on corporal tissue facilitate elevation of intracavernous pressure (ICP) that seems to be a reflex and mediated through the corpus cavernosum, which apparently leads to rigid erection [29]. Changes in the evoked response amplitude would indicate a defect in the reflex pathway. In the rigid erection phase, ICP may increase well above the systolic pressure due to IC and BS muscle contraction [30]. It has been noted that surgical removal of IC and BS leads to ED [31], indicating importance of IC and BS in penile erection.