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18. The portion of the brain that subconsciously processes inputs from the cerebral motor cortex, various brain stem nuclei and sensory receptors to provide smooth, coordinated skeletal muscle movements is the T a) medulla oblongata b) corpora quadrigemina™ c) fourth ventricleT d) cerebellum 19. The cell structure responsible for correct placement of amino acids during protein synthesis is the T a) peroxisome™ b) ribosome™ c) smooth endoplasmic reticulum™ d) desmosome 20. Comparison of the ion concentrations of cell cytoplasm with the extracellular fluid would show that™ a) Potassium concentration inside the cell is higher T b) Sodium concentration inside the cell is lower c) Calcium concentration inside the cell is lower™ d All the aborc fa hand clarm corroct

18. The portion of the brain that subconsciously processes inputs from the cerebral motor cortex, various brain stem nuclei and sensory receptors to provide smooth, coordinated skeletal muscle movements is the T a) medulla oblongata b) corpora quadrigemina™ c) fourth ventricleT d) cerebellum 19. The cell structure responsible for correct placement of amino acids during protein synthesis is the T a) peroxisome™ b) ribosome™ c) smooth endoplasmic reticulum™ d) desmosome 20. Comparison of the ion concentrations of cell cytoplasm with the extracellular fluid would show that™ a) Potassium concentration inside the cell is higher T b) Sodium concentration inside the cell is lower c) Calcium concentration inside the cell is lower™ d All the aborc fa hand clarm corroct

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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please answer 18-21

18.-The portion ofthe brain that subconsciously processes inputs from the cerebral motor cortex, various brain- stem nuclei and sensory receptors to provide smooth, coordinated skeletal muscle movements is the T a) medulla oblongataT b)-corpora quadrigemina T c) fourth ventricle T d) cerebellumT 19.--The cell structure responsible for correct placement of amino acids during protein synthesis is the T a) peroxisome T b) ribosome T c) smooth endoplasmic reticulumT d) desmosome T 20. Comparison of the ion concentrations of cell cytoplasm with the extracellular fluid would show thatT a) Potassium concentration inside the cell is higher T b) Sodium concentration inside the cell is lower T c) Calcium concentration inside the cell is lowerT d)-All the above (a, b and c) are correct. T 21. Protein or peptide hormones as well as neurotransmitters T a) -bind to cell surface receptors T b) may initiate reactions involving membrane bound regulatory molecules such as G-proteins T c) may amplify messages by using "second messengers" such as calcium ions or cyclic AMP which then activate intracellular enzymes such as kinases T d) All the above (a, b and c) are correct. T
Transcribed Image Text:18.-The portion ofthe brain that subconsciously processes inputs from the cerebral motor cortex, various brain- stem nuclei and sensory receptors to provide smooth, coordinated skeletal muscle movements is the T a) medulla oblongataT b)-corpora quadrigemina T c) fourth ventricle T d) cerebellumT 19.--The cell structure responsible for correct placement of amino acids during protein synthesis is the T a) peroxisome T b) ribosome T c) smooth endoplasmic reticulumT d) desmosome T 20. Comparison of the ion concentrations of cell cytoplasm with the extracellular fluid would show thatT a) Potassium concentration inside the cell is higher T b) Sodium concentration inside the cell is lower T c) Calcium concentration inside the cell is lowerT d)-All the above (a, b and c) are correct. T 21. Protein or peptide hormones as well as neurotransmitters T a) -bind to cell surface receptors T b) may initiate reactions involving membrane bound regulatory molecules such as G-proteins T c) may amplify messages by using "second messengers" such as calcium ions or cyclic AMP which then activate intracellular enzymes such as kinases T d) All the above (a, b and c) are correct. T
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18. (d) The cerebellum is the part that is involved subconsciously, It is situated below the cerebrum and involved in the function of motor activity, balance, and posture.

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