The muscle pulling on a bone often works like a type of simple machine called a lever. Most of the bones of the limbs (arms & legs) act as levers for the body. I hope that this is the answer that you were looking for and it has helped you.
Comparative anatomy is the study of the similarities and differences in the structures of different species. ... Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants.
The spiders have became resistant to the pesticide.
Oil sticks to birds preventing them from flying. Whales and dolphins and other creatures that use blow holes can get oil into their respiratory system, making it difficult to breathe. Animals can also ingest the oil. This can be fatal and/or deadly in the short or long term.
1. Contraction of the iliacus and psoas major produces flexion of the hip joint
2. quadriceps femoris muscle group
3. A combination of gluteal and thigh muscles also adduct, abduct, and rotate the thigh and lower leg. The tensor fascia latae is a thick, squarish muscle in the superior aspect of the lateral thigh. It acts as a synergist of the gluteus medius and iliopsoas in flexing and abducting the thigh.
4. triceps brachii
5. The major muscle that laterally flexes and rotates the head is the sternocleidomastoid
6. Rectus abdominis
7. The external obliques are the outermost abdominal muscles. They are also key participants in spinal flexion and the compression of the viscera. Individually, they act alongside the internal obliques in lateral flexion and spinal rotation.
8. abdominal external oblique muscle
9. external intercostal muscles
