What are the directional terms of the body?
What are the directional terms of the body?
Anatomical Directional Terms
- Anterior: In front of, front.
- Posterior: After, behind, following, toward the rear.
- Distal: Away from, farther from the origin.
- Proximal: Near, closer to the origin.
- Dorsal: Near the upper surface, toward the back.
- Ventral: Toward the bottom, toward the belly.
- Superior: Above, over.
- Inferior: Below, under.
Which directional term means toward the side?
lateral (lat) Directional term meaning to the side. proximal. Directional term meaning located closest to the point of attachment to the body. distal.
What is the opposite directional term for caudal?
cephalic (opposite of caudal, same as superior)
What is dorsal view?
Dorsal means the upper surface of an organism. For example, the dorsal view of a butterfly would be viewing the insect from above: Insects within a reference collection are commonly mounted so that their dorsal surface is visible.
What is dorsal used for?
Toward the back (not rear): for the pig, dorsal is used; for humans, posterior may also be used. Toward the front/belly: for the pig, ventral is used; for humans, anterior may also be used.
What does dorsal mean?
Medical Definition of dorsal (Entry 1 of 2) 1a : being or located near, on, or toward the upper surface of an animal (as a quadruped) opposite the lower or ventral surface. b : being or located near, on, or toward the back or posterior part of the human body.
What is the definition of dorsal fin?
: a flat thin part on the back of some fish (such as sharks)
What are the 2 main body cavities?
The cavities, or spaces, of the body contain the internal organs, or viscera. The two main cavities are called the ventral and dorsal cavities. The ventral is the larger cavity and is subdivided into two parts (thoracic and abdominopelvic cavities) by the diaphragm, a dome-shaped respiratory muscle.
What is another word for dorsal?
What is another word for dorsal?
| back | posterior |
|---|---|
| hind | rearward |
| hindmost | aft |
| caudal | posticous |
| behind | aback |
What’s another word for caudal?
What is another word for caudal?
| back | rear |
|---|---|
| hinder | hindmost |
| hind | rearward |
| posterior | after |
| aft | behind |
Where is the dorsal area?
The dorsal body cavity is located along the dorsal (posterior) surface of the human body, where it is subdivided into the cranial cavity housing the brain and the spinal cavity housing the spinal cord. The two cavities are continuous with one another.
What is the opposite of dorsal in medical terms?
ventral. pertaining to the belly; the opposite of dorsal. Hence, in quadrupeds, pertaining to the lower or underneath side of the body; in humans, pertaining to the anterior portion or the front side of the body.
What does caudal mean?
1 : of, relating to, or being a tail. 2 : directed toward or situated in or near the tail or posterior part of the body.
What is the difference between distal and inferior?
As adjectives the difference between inferior and distal is that inferior is of lower quality while distal is (anatomy|geology) remote from the point of attachment or origin; as, the distal end of a bone or muscle.
What is dorsal heart?
Dorsal side means back side and Ventral side means front side. The back side of the heart will be Dorsal and the Front side toward our chest will be ventral.
Do humans have a dorsal blood vessel?
In front of the heart, the dorsal vessel lacks valves or musculature. It is a simple tube (called the aorta) which continues forward to the head and empties near the brain.
What is position of heart in human body?
Your heart is located between your lungs in the middle of your chest, behind and slightly to the left of your breastbone (sternum).
Which heart chamber has the thickest walls?
left ventricle
Which walls are thickest?
Which chamber has the thinnest wall?
right ventricle
Which artery has the thickest wall?
All arteries have relatively thick walls that can withstand the high pressure of blood ejected from the heart. However, those close to the heart have the thickest walls, containing a high percentage of elastic fibers in all three of their tunics. This type of artery is known as an elastic artery (see Figure 3).
Are artery walls thick or thin?
Arteries and arterioles have relatively thick muscular walls because blood pressure in them is high and because they must adjust their diameter to maintain blood pressure and to control blood flow.
What are the thinnest veins called?
Capillaries. Capillaries are the shortest, narrowest, and thinnest blood vessels. They connect arterioles to venules to complete the circuit. Capillaries consist only of endothelium with some connective tissue binding the cells.
Why do venules have thin walls?
Blood flows from the capillaries into very small veins called venules, then into the veins that lead back to the heart. Veins have much thinner walls than do arteries, largely because the pressure in veins is so much lower. Veins can widen (dilate) as the amount of fluid in them increases.