Organization of the Body!

Knowing the body & where things are located can get a little confusing.. so this is my organization of the body!

Here is a picture of the human body (hopefully you know what it is!:))

LOCATION.
-what are the scientific terms of location on the body?

Superior
- Above. For example, the upper part of the structure. Your head is superior to your feet (:

Inferior
- Below. For example, away from the head. Your feet are inferior to your arms.

Anterior
-In front of. For example, at the front of the body. Your eyes are anterior to your brain.

Posterior
-Behind. For example, your backbone is posterior to your heart.

Medial
-On the inner side of. For example, your heart is medial to your arm.

Lateral
-Outer side of the body. For example, your arms are lateral to your heart.

Intermediate
-Between medial & lateral. For example, anything in-between your arms and heart is intermediate to them.

Superficial
-At the body surface. Your skin would be superficial to your bones.

Deep
- More internal or away from your body surface. Your bones are deep to your skin.

Proximal
-Closer to the origin of the body. For example, your shoulder is proximal to your fingers

Distal
- Father from the origin of the body. For example, your fingers are distal to your shoulder



REGIONAL TERMS-

Axial- This would be your head, neck and trunk.

Appendicular- I'm sure you could guess, this is your limbs OR appendages

DIVIDING THE BODY:

Sagittal - this divides the the body into right and left

Mid-sagittal or Medial - Midline

Frontal or Coronal - anterior and posterior parts

Transverse - cross section, superior & inferior

Oblique - diagonally

CAVITIES- what protects what?

Dorsal - nervous system
            Subdivisions
                      Carinal - skull, encases brain
                      Vertebral - encases spinal cord

Ventral - internal organs (subdivisions - thoracic & abdominopelvic)

Pleural - lungs

Mediastinum - pericardial cavity, & remaining thoracic organs

Pericardial - heart

Abdominopelvic ( see ventral ) - two subdivisions
    Abdominal - stomach, intestines, spleen, liver, & others
    Pelvic - bladder, reproductive organs, and rectum
Quadrants- Right upper, left upper, right lower, and left lower



Pictures pulled from Google.com

Homeostasis Lab :)

From my last post, you probably know Homeostasis can be tested on our own bodies! Our group composed a lab to demonstrate this (: butttttttttt.... my computer was being mean! Therefore, your going to have to click on the link below. 

Homeostasis Lab - Since it didn't want to work :(

Homeostasis :)

What EXACTLY is homeostasis? I'm sure you have heard the word before but don't really know exactly what it consists of, right?

The correct definition of Homeostasis?
           Homeostasis is the ability to maintain a relatively stable internal environment in an ever-changing outside world!
           The environment of the body is a state of equilibrium.

What interacts to maintain homeostasis?
           Chemical, thermal, and neural

There are also three interdependent components of control mechanisms:
          Receptor - these things are monitors that respond to change, in other words, stimuli
          Control Center - this determines the point when the variable is determined.
          Effector - this is what provides the means to respond to the stimulus
                      In other words, the stimulus is what produces the change. The receptor detects the change which is sent to the control center. The control center sends the change to the effector which feeds back into the stimulus and fixes the imbalance.

What types of homeostasis is there?
          The most common feedback is negative. This is where the output shuts off the original stimulus. This could be hunger, and low or high levels of blood glucose. When someone's blood glucose increases past the level it's supposed to, negative feedback starts. This is where homeostasis and its three interdependent components start to work. They take the high or possibly low levels and set them back to what the body considers normal.

         In very few cases, positive feedback occurs. This is, of course, the opposite of negative feedback. When you get a cut, homeostasis kicks in and starts to heal. Positive feedback enhances the original stimulus. Therefore, when you get a cut, homeostasis has to exaggerate the stimulus in order to heal your injury.

Pictures pulled from Google.com