BIO 252 FINAL SCRIPT 2026 HUMAN ANATOMY AND PHYSIOLOGY QUESTIONS ANSWERS COMPLETE A+

BIO 252 FINAL SCRIPT 2026 HUMAN
ANATOMY AND PHYSIOLOGY QUESTIONS
ANSWERS COMPLETE A+

◉ Posterior column pathway.
Answer: Fine touch, vibration, proprioception; decussates in
medulla


◉ Fasciculus gracilis.
Answer: Lower body


◉ Fasciculus cuneatus.
Answer: Upper body


◉ Medial lemniscus.
Answer: Tract after decussation in medulla


◉ Spinocerebellar tract.
Answer: Unconscious proprioception


◉ Posterior spinocerebellar.

,Answer: Ipsilateral


◉ Anterior spinocerebellar.
Answer: Double crosses


◉ Decussation.
Answer: Crossing of nerve fibers


◉ Upper motor neuron.
Answer: Brain to spinal cord


◉ Lower motor neuron.
Answer: Spinal cord to muscle


◉ Corticospinal tract.
Answer: Voluntary limb movement; decussates in medullary
pyramids


◉ Anterior corticospinal.
Answer: Axial muscles


◉ Lateral corticospinal.

, Answer: Limbs


◉ Vestibulospinal tract.
Answer: Balance


◉ Tectospinal tract.
Answer: Head and eye reflexes


◉ Reticulospinal tract.
Answer: Muscle tone


◉ Rubrospinal tract.
Answer: Minor in humans; fine motor


◉ Stretch reflex.
Answer: Monosynaptic; maintains tone


◉ Muscle spindle.
Answer: Stretch receptor


◉ Alpha motor neuron.
Answer: Causes contraction