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hbs unit 2 Questions and Correct Verified Answers Latest Version

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communication Explain how the human senses assist in communication in the body and between individuals. Central nervous system The part of the nervous system which, in vertebrates, consists of the brain and spinal cord, to which sensory impulses are transmitted and from which motor im...

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  • October 14, 2024
  • 34
  • 2024/2025
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1 | P a g e | © copyright 2024/2025 | Grade A+




hbs unit 2 Questions and Correct
Verified Answers Latest Version
communication







Explain how the human senses assist in communication in the body and

between individuals.







Central nervous system


✓ The part of the nervous system which, in vertebrates, consists of the

brain and spinal cord, to which sensory impulses are transmitted and

from which motor impulses pass out, and which supervises and

coordinates the activity of the entire nervous system.




Peripheral nervous system


✓ The part of the nervous system that is outside the central nervous

system and comprises the cranial nerves excepting the optic nerve, the

spinal nerves, and the autonomic nervous system.




Master01 | September, 2024/2025 | Latest update

, 1 | P a g e | © copyright 2024/2025 | Grade A+

Cerebrum


✓ The dorsal portion, composed of right and left hemispheres, of the

vertebrate forebrain; the integrating center for memory, learning,

emotions, and other highly complex function of the central nervous

system.




Lobe


✓ A division of a body organ (as the brain, lungs, or liver) marked off by a

fissure on the surface.




Cerebellum


✓ A large dorsally projecting part of the brain concerned especially with

the coordination of muscles and the maintenance of bodily

equilibrium, situated between the brain stem and the back of the

cerebrum and formed in humans of two lateral lobes and a median

lobe.




Brain Stem


✓ The part of the brain composed of the midbrain, pons, and medulla

oblongata and connecting the spinal cord with the forebrain and

cerebrum.



Master01 | September, 2024/2025 | Latest update

, 1 | P a g e | © copyright 2024/2025 | Grade A+

Gyrus


✓ A convoluted ridge between anatomical grooves.




Sulcus


✓ A shallow furrow on the surface of the brain separating adjacent gyri.




The gyri and sulci on the brain greatly increase the brain's surface area. How

do you think this increase in surface area relates to improved brain function?


✓ These bends and folds increase the surface area of the brain, allowing

many more neurons to be packed into the overall structure, therefore

increasing the brain's ability to process information.




Can you think of another organ in the human body that is shaped specifically

to increase surface area? How does this organ's structure relate to its function

in the body?


✓ The bending and folding of the small intestine creates a huge overall

surface for the absorption of key nutrients from food. Additionally tiny

structures called villi and microvilli stick out into the open space in the

intestine, further helping absorb nutrients from the food that passes

through.




Master01 | September, 2024/2025 | Latest update

, 1 | P a g e | © copyright 2024/2025 | Grade A+

Why do you think you created the frontal lobe of the cerebrum in the same

color clay you used to create the three muscles of the face?







motor cortex







sensory cortex







central sulcus


✓ The fold between the motor cortex and the sensory cortex




brain stem parts


✓ midbrain, pons, medulla oblongata




how far does the spinal cord extend


✓ spinal cord should extend to the first vertebrate in the lumbar region

(called L1). Find the last vertebrate to line up with a rib and count one

below.



Master01 | September, 2024/2025 | Latest update

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