PACK 2026 FULLY SOLVED MATERIAL
◉ afferent fibers. Answer: transmit impulses from organs to CNS
◉ efferent fibers. Answer: transmit impulses to organs from CNS
◉ somatic nervous system. Answer: voluntary control of skeletal
muscles
ex: chewing food
◉ autonomic (visceral) nervous system. Answer: involuntarily
controls the visceral muscles of organ systems like the digestive and
cardiovascular systems. Controls the contraction and relaxation of
visceral reflexes.
ex: digestion, heartbeat
◉ sensory neurons. Answer: gathers information and carries it to
the CNS. The senses gather the information that the sensory nervous
system transmits
◉ motor nerves. Answer: carry impulses away from the CNS to the
effectors
,◉ ventricles (brain). Answer: canals in the brain that contain
cerebrospinal fluid
◉ cerebrospinal fluid. Answer: Fluid in the space between the
meninges that acts as a shock absorber that protects the central
nervous system.
◉ cerebellum. Answer: part of brain found at the very bottom (near
neck) of the skull and coordinates body movements, posture, and
balance
◉ brainstem. Answer: found between the thalamus and the spinal
cord. Lowest part of the brain. Supports unconscious functions like
breathing, heart rate, and blood pressure.
◉ cerebrum. Answer: Largest part of the brain; responsible for
interpreting touch, speech, reasoning, and emotions
◉ cerebral cortex. Answer: grey matter that surrounds the entire
cerebrum
◉ gyri. Answer: ridges
, ◉ sulci. Answer: shallow grooves
◉ fissures. Answer: deep grooves in the brain
◉ frontal lobe. Answer: processes high level cognitive skills,
reasoning, concentration, motor skills, language.
◉ parietal lobe. Answer: integration site for visual perception and
sensory information such as touch, pain, and pressure
◉ temporal lobe. Answer: Part of brain that controls hearing
◉ occipital lobe. Answer: interprets visual information
◉ limbic system. Answer: controls emotions and memory
◉ Hypothalamus. Answer: plays role in regulating the autonomic
nervous system. Primarily concerned with homeostasis and
regulates activities such as hunger, anger and pain
◉ amygdala. Answer: this produces feelings such as anger, violence,
fear, anxiety