BIO 250 EXAM SCRIPT VERIFIED QUESTIONS AND SOLUTIONS COMPLETE REVIEW MATERIAL

BIO 250 EXAM SCRIPT VERIFIED
QUESTIONS AND SOLUTIONS COMPLETE
REVIEW MATERIAL

●● mechanisms that maintain homeostasis
Answer: Sensors (receptors), a control center (usually the brain), and
effectors (muscles/glands) that restore balance.


●● example of homeostasis in action
Answer: Regulation of body temperature—if you get too hot, you sweat;
if you get too cold, you shiver.


●● negative feedback
Answer: A process in which a change in a variable triggers a response
that counteracts the initial change, returning the variable to its set point.


●● example of negative feedback
Answer: Blood glucose regulation—high blood sugar triggers insulin
release, lowering blood sugar back to normal.


●● anatomical position
Answer: Standing upright, facing forward, arms at sides, palms forward,
feet together.

,●● importance of anatomical position
Answer: It provides a consistent frame of reference for anatomical
terminology.


●● anatomical regions
Answer: Head, neck, trunk, upper limbs, lower limbs.


●● superior
Answer: Above; toward the head.


●● inferior
Answer: Below; toward the feet.


●● anterior
Answer: Front of the body.


●● posterior
Answer: Back of the body.


●● medial
Answer: Toward the midline of the body.

, ●● lateral
Answer: Away from the midline of the body.


●● proximal
Answer: Closer to the trunk or point of origin.


●● distal
Answer: Farther from the trunk or point of origin.


●● superficial
Answer: Near the surface of the body.


●● deep
Answer: Far from the surface of the body.


●● sagittal plane
Answer: Divides the body into left and right portions.


●● coronal (frontal) plane
Answer: Divides the body into anterior (front) and posterior (back)
portions.