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The angle of friction is defined as the angle of a plane where a body placed on the plane will start to slide.
oblique
It is the level of the junction between the sternum body and its manubrium. This joint is a symphysis. There are a few symphyseal joints in the body and they include an early symphysis menti between the two mandibles and a symphysis pubis between the two pubic bones. It represents the plane that separates the superior from the inferior mediastini. It is the plane at which the bifurcation of the trachea. It is the plane of the division of the pulmonary trunk. It is the plane of the arch of aorta. It is plane that contains the ligamentum arteriosum The plane that contains superficial and deep cardiac plexuses At this plane, the ascending thoracic duct escapes from the right to the left. It is the plane of the junction of the 2nd sternocostal articulation. It marks the level of the T4-T5 intervertebral disc. The tracheal carina is deep to the sternal angle. Left recurrent laryngeal nerve recurves below the ligamentum arteriosum. The azygos vein enters the superior vena cava.
It's (m g) cos(30) = (10 x 9.807) (0.866) = 84.931 newtons (rounded)
That was the Vitruvian Man from Davinci
From a vertical point of view, the plane that divides the body into left and right portions is the lateral plane or sagittal plane. Dividing the body into planes makes studying anatomy less confusing as body parts can be more easily identified.
The sagittal plane divides the body into right and left halves.
The frontal plane divides the body into a dorsal and a ventral section.
The midsagittal plane divides the body into identical left and right arts.
Transverse plane.
coronial plane
Transverse plane divides the body into a superior (upper) and inferior (lower) portion.
Transverse plane
Anterior and posterior portions. It divides the body into front and back portions.
You have three such planes. First is sagittal plane. Sagitta means arrow. So this vertical plane enters your body like and arrow. It divides your body in two equal parts. Then you have a coronal plane at right angle to this plane. It divides your body into anterior and posterior parts. Then you have a transverse plane to make your body into two parts. That is upper and lower parts, when you stand erect.
Sagittal. Midsaggittal plane divides the body into equal halves
Axial plane (Transverse Plane) which is a horizontal plane that divides the body or any of its parts into upper and lower parts. If you mean the entire body, it runs horizontality through the umbilicus or navel.