The sulcus spermaticus is visible at the midline of the ventral surface. Â There are loads of different animals you can see through the feature.
NextThe glans lumen augmented by inflation ranged from 3200 to 13 700 mm 3 and its size additionally scaled with total body length shorter length alligators: average 3800 mm 3 ± 600; longer length alligators: average 11 567 mm 3 ± 2034.
Alligators are a keystone species benefiting the marshes, swamps, rivers and lakes where they live and many other species found within their natural community. The accordion-like morphology of the lateral glans epithelia makes lateral expansion of the ridge region possible, as does the crimped and folded collagen fibers in the tissues underlying the lateral epithelium.
NextPhotography by Landon Rowe and Josie Smith.
Linear regression analysis was performed on the relationship between glans occupied volume and TL. D MRI corresponding to histological images A—C with regions highlighted by dashed color lines: phallic glans outer epithelium orange , sulcus epithelium and lumen red , smooth muscle bundle region yellow , dense irregular collagen fibers blue , and spongiform, parallel collagen fibers inflatable regions purple.
Nonbirefringent regions black of smooth muscle fibers asterisks.
Here, we: 1 histologically characterize the underlying tissue types and morphologically quantify the shape changes associated with glans inflation into the copulatory conformation, 2 digitally reconstruct from MRI the 3D shape of functional tissue compartments, and 3 diffusible iodine-based contrast-enhanced computed tomography image the copulatory fit between male phallus and female cloaca. Smooth muscle fiber bundles while asterisks. Note: In images A, B and C, D, the distal portion of the glans tip of the phallus was outside of the MRI field and is truncated.
NextWhile alligators move very quickly in water, they are generally slow-moving on land.
Correlating histological and MRI data from the alligator glans tip region. Defenders' Impact Defenders fights to defend the Endangered Species Act, which was vital in bringing the alligator back from the brink of extinction, and the Clean Water Act, which protects wetlands and waterways that are important for alligators and crocodiles. The crocodylian phallus is laterally symmetrical, and their females produce eggs in both ovaries, but male insemination patterns are not yet known.
NextThe tissues were anchored in place with several ligatures and fixed in 10% formalin for 1 week, then submerged in a solution of 70% ethanol with 10% iodine for several weeks.
A Inflated glans showing representative parts and numbered transverse planes of comparison, as shown in B and C. Although most of the alligators are known to inhabit the states of Florida and Louisiana, southern Florida is the only region where both crocodiles and alligators can be seen living collectively. Alternative functions for the glans ridge Glans expansion could serve other nonmutually exclusive functions.
In fact, our diceCT scan revealed that the well-developed clitoris is in the direct path of the intromitting phallus shaft, making it possible for the male to stimulate the clitoris during copulation.
Horizontal lines beside stacked univariate scattergram data points denote mean values.
NextThe inflatable tissues around the sulcus also extend distally into the glans tip not shown in MRI reconstruction and eventually fuse to form a single spongiform inflatable tissue 1—4, distal to proximal.
 You will have to allow access for Google to place the animal in your space. These size changes may have significant effects on copulatory interactions with females and therefore drive sexual selective pressures.
NextB Elastin histochemistry and picrosirus red staining: elastin fibers blue, dense fiber aggregates denoted by arrows and collagen-rich tissue pink.