av Jazzelle Sinapati 1 år siden
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PET
Purpose: diagnose heart disease, brain abnormalities, cancer spread, infection, bone and thyroid disease.
MRI
Advantages: uses a magnetic field to generate and image instead of radiation. 360-degree view of the body region being investigated
Disadvantages: Patients having metal implants can not be exposed to MRI
Purpose: Used to diagnose spinal cord injury, brain, and nervous system disorders
CAT scans
advantages: Can make soft tissue visible for diagnosis through the computer
Disadvantages: patients may experience anxiety from the claustrophobic environment presented by machines
Purpose: Used to view bone, muscle, tumors, and blood vessels
X-Rays
Advantage: Produces a high energy beam that passes through soft tissue and strike bone tissue but doesn't pass through
Disadvantages: patients able to develop cancer from over exposure
Purpose: used to diagnose fractures and bone deficit orders
What is the feedback pathway?
Receptor - receives the stimulus
Effector - the responce
Control center (the brain) - process the stimulus
Stimulus - the variable the disrupts homeostasis
3. Tissue level
4. Organ level
5. System level
6. organism level
Osmosis movement of water
The types of solutions
Hypotonic
- Higher solute INSIDE - Higher water OUTSIDE
Isotonic
- Equal solute - Equal water
Hypertonic
- Higher solute OUTSIDE -Higher water INSIDE
Diffusion moment of solute
Deep - farther from the surface of the body.
Front & Back
Anterior (or ventral) - toward the front of the body.
Posterior (or dorsal) - direction toward the back of the body.
Right & Left
Medial - toward the middle of the body.
Lateral - toward the side of the body.
Toward & Away
Distal - farther from
Proximal - nearer to
Superior (or cranial) - a position above or higher than another part of the body.
Inferior (or caudal) - lower than another part of the body.
Feedback loops is what maintains homeostasis.
What are the stagers in a Feedback loop?
How does Positive and Negative Feedback Regulate Body Functions?
The flu is an example of Positive and negative feedback. Wh
If you don't maintain a healthy cycle then, your body cannot maintain homeostasis.
What are the Different Grpahs used in Science?
Y- Axis DEPENDENT Variable
X - Axis Independent Variable
Variable = Anything that is measured or changed in an experiment.
Subtopic
constant
Control Variable Constant Variable Variables that are being changed Examples - temperature, pressure, concentration