Body Structure And Function Exam Questions And Correct Detailed Answers With Rationales (Verified Answers) |Already Graded A+ 2025 New Update

Body Structure and Function EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |ALREADY GRADED A+ 2025 NEW UPDATE anatomical positions - Answers - medial, lateral, distal, proximal, superior, inferior, anterior, posterior, superficial, deep connective tissue - Answers - provides support for your body and connects all its parts epithelial tissue - Answers - Tissue that covers outside of the body and lines organs and cavities. basic structures of a cell - Answers - nucleus, cytoplasm, cell membrane body planes - Answers - imaginary vertical and horizontal lines used to divide the body into sections for descriptive purposes (sagittal, transverse, frontal) Transverse - Answers - Divides body into upper and lower parts body cavities - Answers - spaces within the body that contain and protect internal organs plasma membrane - Answers - The membrane at the boundary of every cell that acts as a selective barrier, thereby regulating the cell's chemical composition. Phospholipids - Answers - a lipid containing a phosphate group in its molecule - like a picket fence instead of wall. Gives membrane selective permeability. DNA - Answers - A complex molecule containing the genetic information that makes up the chromosomes. Largest molecule in the body. Endoplasmic Reticulum - Answers - A system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids. Chromatin - Answers - Clusters of DNA, RNA, and proteins in the nucleus of a cell RNA - Answers - A single-stranded nucleic acid that passes along genetic messages Ribosomes - Answers - site of protein synthesis genetic code - Answers - collection of codons of mRNA, each of which directs the incorporation of a particular amino acid into a protein during protein synthesis Microville - Answers - projections that increase the cell's surface area Golgi apparatus - Answers - A system of membranes that modifies and packages proteins for export by the cell. This handles hundreds of different proteins simultaneously. Diffusion - Answers - Movement of molecules from an area of higher concentration to an area of lower concentration. Osmosis - Answers - Diffusion of water through a selectively permeable membrane osmotic pressure - Answers - the external pressure that must be applied to stop osmosis mitosis - Answers - cell division in which the nucleus divides into nuclei containing the same number of chromosomes Anaphase - Answers - Phase of mitosis in which the chromosomes separate and move to opposite ends of the cell Prophase - Answers - first and longest phase of mitosis, during which the chromosomes become visible and the centrioles separate and take up positions on the opposite sides of the nucleus Nucleotide - Answers - A building block of DNA, consisting of a five-carbon sugar covalently bonded to a nitrogenous base and a phosphate group. nitrogenous base - Answers - is a carbon ring structure that contains one or more atoms of nitrogen. In DNA, Adenine, Thymine, Cytosine, Guanine. sodium-potassium pump - Answers - A transport protein in the plasma membrane of animal cells that actively transports sodium out of the cell and potassium into the cell. Isotonic intravenous fluid - Answers - No fluid shift, used for IV rehydration - also useful in electrolyte replacement (NS and LR) plasma membrane structure - Answers - phospholipid bilayer with embedded proteins plasma membrane function - Answers - controls what comes in and out of the cell structure of nucleus - Answers - 1. Nuclear envelope: double membrane surrounding nucleus, outer membrane continuous with the (R)ER of the cell.