*The pelvic girdle is a duplex structure like pectoral girdle which is made up of three cartilage bones in each half which are known as ossa innominata. *Each os innominatum is formed by three bones *These cartilage bones are – ilium, ischium and pubic. *Dermal bones are lacking in pelvic girdle. *The pelvic girdle has a depression (concavity) at the junction of the three bones which is known as acetabulum, into which the head of femur of the hind limb articulates. …show more content…
26.21 Pelvic girdle of Polypterus (A) and Lampanyctus (B) in ventral view Sarcopterygians – *The lobe-finned fishes were the first vertebrates to tend towards to venture on the land. *So, in them, the development of pelvic girdle becomes very important to support body weight in the transition from water to land. *In chonate fishes pelvic girdle (Fig. 26.22) consists of bilateral elements having a forward pubic process, a medial ischial process and a dorsolateral projecting iliac process. *In dipnoi the two parts are fused in the midline. *In this it resembles the pelvic girdle of amphibian and the beginning of the tetrapod walking
It is common knowledge that a waist cincher takes off inches from the body. The bonus that is not as apparent is that it also helps to improve posture. This means that not only will you look good, but you will also gain stability in the core of the body too. Those with poor posture who do not have weight issues will still benefit from a waist cincher.
Even though they are closely related to crustaceans, their bodies are particularly similar to crab and other sea creature with shells. The isopods have three distinct regions such as the head, thorax and abdomen (CISEO). Their characteristic as for what they look like is their claws attached to their abdomen. Also, they have a pair of antennae, simply small eyes and seven pairs of appendages connected to their segmented thoracic region.
Your Inner Fish essay In Neil Shubin’s Your Inner Fish, he takes his readers on a journey throughout time, teaching how marine animals inevitably ended up on land. Shubin starts his book by describing how himself and other paleontologists found a missing piece, that showed how animals transitioned from water to land. With this discovery it allowed paleontologists like Shubin, to see transitions that could possibly link certain species of fish to humans. A major change between fish and humans is the use of limbs and its ability to use its limbs to take itself out of the water and away from the dangers within.
It was also determined that prehensile tailed platyrrhines had more pronounced and convex articular surface curvatures. Greater contour curvatures on intervertebral articular surfaces are associated with an increased range of flexibility and mobility of the caudal vertebrae, benefiting prehensile primates that use their tails in a variety of complex movements. Hence, through analyses of the morphology of caudal vertebrae, specifically their articular surface area and curvature, it was concluded prehensile and non-prehensile tails could be distinguished according to these structural features. Both of these characteristics relate to effective use of the tail during locomotion. This article is useful towards my GEM as it describes differences in bone structure of the tails of prehensile and non-prehensile primates, and explains the reasons that certain variations confer advantages to prehensile tail
The Appendicular Skeleton compliments the axial for without the appendicular you would be unable to walk or wave "Hi" because you guessed it , it is composed of your appendages or if you will arms and legs. Until this point in
Instead of teeth, Dunkleosteus possessed two pairs of sharp bony plates which formed a beak-like structure. Dunkleosteus, together with most other placoderms, may have also been among the first vertebrates to internalize egg fertilization, as seen in some modern
The pectoral flippers (along the edges of the body) are for directing; they contain bones homologous to the forelimbs of land well evolved creatures. A bottlenose dolphin found in Japan has two extra pectoral balances, or "rear legs", at the
It was determined that the bipedal form was used when needing an increase in velocity in a quick response. This was determined though close watching of the lizards in their habitat monitoring their behaviour. When prey was close the bipedal form
The knee joint is also known as tibiofemoral joint. It is a synovial hinge joint formed between three bones which are the femur, tibia and patella (Taylor, n.d.). There are two rounded, convex processes which are known as condyles on the distal end of the femur. The distal end of the femur meets two rounded, concave condyles at the proximal end of the tibia (Tyalor, n.d.). A thick, triangular bone which is known as patella lies anterior surface between the femur and tibia.
Vertebrates are known to be animals with backbones. Tooth reduction is one of the major evolutionary trends that developed among major vertebrate groups that allowed for the transition from aquatic to terrestrial life. Evolution of limbs and being able to breath air are other evolutionary trends that took placeThese trends include improved respiration and protective and insulating body coverings. More over the transition from water to land also included changing to more efficient reproductive methods like having a placenta for some animals or egg layers for other animals. Lastly, the morphology of organisms evolved such that for land they would have paired, muscular appendages used for crawling and
In my hypothesis, I state that the stickleback fish would not have a pelvic spine caused by an insertion mutation in the Pitx1 enhancer region. According to the gel, the stickleback fish in Big Lake do not have the pelvic spine due to a deletion mutation found in the Pitx1 enhancer region. This can be further proved by the phenotype of the fish found in Big lake. The stickleback fish found in Big Lake (seen in figure 2) is smooth across the bottom, with no pelvic spine present. This proof supports the results of the gel
The main body is broken into three sections. There is the abdomen, thorax,
Penis packing - the art of creating the male organ appear larger, more obvious or extra distinguished by means of stuffing the undergarments with extraneous fabric - is an age-ancient gimmick. It's effortless to have an understanding of the psychology behind this trickery; a lot of men effortlessly believe that having an outstanding penis bulge will advise high-quality penis wellbeing and, probably most significantly, a more sexually mighty instrument. It can also be a most important self belief booster. Blame nature. Human beings may have evolved over the centuries, but sexual movements are still encouraged with the aid of instinct.
The first 3 pairs of walking legs are chelate that in addition to its walking function, they help the animals to catch their food as well as in offending and defending. The two rounded, reddish-brown uropods are connected to the paddle-like telson. Together, the uropods and telson form a fan-shaped tail. The shrimp locomotion is performed by the telson and uropods.
The inferior surface is convex from side to side and concave before backward. It articulates with vertebral bodies above and below. II. Uncus or posterolateral lip III. Pedicle: