\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{ashleyk}
\pdfinfo{
  /Title (skeletal-system.pdf)
  /Creator (Cheatography)
  /Author (ashleyk)
  /Subject (Skeletal System Cheat Sheet)
}

% Lengths and widths
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\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
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\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
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\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Skeletal System Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{ashleyk} via \textcolor{DarkBackground}{\uline{cheatography.com/182291/cs/37915/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}ashleyk \\
  \uline{cheatography.com/ashleyk} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 1st April, 2023.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{p{0.4577 cm} x{2.05965 cm} x{2.05965 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Osseous Tissue}}  \tn
% Row 0
\SetRowColor{LightBackground}
TYPE & Spongy Tissue & Compact Tissue \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\seqsplit{STRUCTURE} & Contains lamellae arranged randomly within plates called trabeculae aligned on stress lines with irregular cavities filled with red bone marrow in the interspaces & Contains osteons and lamellae containing lacunae filled with osteocytes \tn 
% Row Count 10 (+ 9)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{MATRIX} & Porous & Hard/calcified \tn 
% Row Count 12 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{FUNCTION} & reduce weight while maintaining strength & provide protection \tn 
% Row Count 15 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Compact Osseous Tissue}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{p{5.377cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/ashleyk_1680369126_IMG_0207.jpg}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Contains osteons which involve a central canal, also referred to as the osteonic/Haversian canal. This canal is surrounded by lamellae which are concentric rings of matrix that contain osteocytes, osseous cells, in lacunae, between the rings}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.05271 cm} x{1.32733 cm} x{2.19696 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Lamellae}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{Concentric} & \seqsplit{Interstitial} & Circumferential \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Surround the osteon & space in between osteons & around circumference of bone (inner and outer) \tn 
% Row Count 5 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Lamellae cont.}}  \tn
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\mymulticolumn{1}{x{5.377cm}}{Image could not be loaded.} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{C: Endosteum \newline D: Periosteum: outer fibrous periosteum in black, inner osteogenic layer in orange) \newline E: Haversian canal (= central canal) \newline H: Osteon \newline I: Osteocytes in lacunae \newline J: Concentric lamellae \newline K: Interstitial lamellae \newline L: Circumferential lamellae}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Spongy Osseous Tissue}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{p{5.377cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/ashleyk_1680369610_Screen Shot 2023-04-01 at 1.19.27 PM.png}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Involves plates called trabeculae, a bundle of fibres aligned on lines of stress, along with irregular cavities containing red bone marrow. The trabeculae allow the bone to withstand stress by providing strength. The irregular cavities containing red bone marrow connect to the canaliculi, allowing for nutrients to be delivered through blood supply.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Osseous Tissue Matrix}}  \tn
% Row 0
\SetRowColor{LightBackground}
Inorganic & Organic (the osteon) \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
Mineral salts such as hydroxyapatite, calcium carbonate, magnesium hydroxide, fluoride, and sulphate & contains proteoglycans, glycoproteins, and collagen fibres \tn 
% Row Count 6 (+ 5)
% Row 2
\SetRowColor{LightBackground}
makes tissue hard and allows for strength and protection (resistance to compression) & allows the tissue to be strong and flexible (resistance to \seqsplit{strenching/twisting)} \tn 
% Row Count 11 (+ 5)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.16956 cm} x{1.00248 cm} x{1.00248 cm} x{1.00248 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{4}{x{5.377cm}}{\bf\textcolor{white}{Structures}}  \tn
% Row 0
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Periosteum & \seqsplit{Endosteum} & \seqsplit{Diaphysis} & \seqsplit{Epiphysis} \tn 
% Row Count 1 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}----}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}