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Tissues of the Heart Sammy Meilink Gabby Avanzado Michaela Karandziff Colin Hopper.

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Presentation on theme: "Tissues of the Heart Sammy Meilink Gabby Avanzado Michaela Karandziff Colin Hopper."— Presentation transcript:

1 Tissues of the Heart Sammy Meilink Gabby Avanzado Michaela Karandziff Colin Hopper

2 Cardiac Muscle Cells These cells are smaller than muscle fibers They contain a single, central nucleolus Contains myofibrils and contraction – involves shortening of individual sarcomeres Dependent on aerobic metabolism to obtain energy to continue contracting There are reserves that store energy as glycogen and lipids

3 Chordae Tendineae Blood travels from the right atrium to the right ventricle through a broad opening bounded by three flaps of fibrous tissue – Part of the right atrioventricular – also known as tricuspid Each cusp is braced by connective tissue fibers

4 Chordae Tendineae SearchBox&biw=1024&bih=600&tbm=isch&prmd=imvns&tbnid=Dr0sTllHS6ExFM:&imgrefurl= heart&docid=z6YbsE4M9_Zs7M&imgurl= 9QTB54TPCA&zoom=1&iact=hc&vpx=97&vpy=264&dur=2531&hovh=201&hovw=251&tx=142&ty=200&sig=113621735808706121368&page=1&tbnh=132&tbnw=169&start=0&ndsp=18&v ed=1t:429,r:12,s:0,i:95

5 Papillary Muscle Chordae Tendineae is connected to the papillary muscles – Cone shaped projections on the inner surface of the ventricle

6 Connective Tissue Abundant collagen and elastic fibers wrap around cardiac muscle cells and tie together adjacent cells

7 Three Functions Provide support for cardiac muscle fibers, blood vessels, and nerves of myocardium Add strength and prevent overexpansion of the heart Help the heart return to normal shape after contractions

8 Layers of the Heart Intercalated discs interlock membranes of adjacent cells by desmosomes and linked by gapped junctions They convey the force of contraction from cell to cell Provide movement of ions and small molecules

9 Layers of the Heart cont. Epicardium covers the outer surface of the heart Myocardium contains cardiac muscle tissue, blood vessels and nerves Endocardium a simple squamous epithelium that is continuous

10 Vocabulary Intercalated discs: Each cardiac muscle cell is in contact with several others at specialized sites Desmosomes: The cell membranes of two cells are locked together by intercellular cement and by membrane proteins connected to a network of intermediate filaments – Intercellular cement: Is a protein-polysaccharide mixture Myofibrils: Organized collections of myofilaments in skeletal and cardiac muscle cells – Myofilaments: Protein filament consisting of the proteins actin and myosin

11 Work Cited Slide Two Pic: h&prmd=imvns&tbnid=FfPmAz7Acna- RM:&imgrefurl= =2&tbnh=151&tbnw=192&start=12&ndsp=15&ved=1t:429,r:2,s:12,i:146&tx=113&ty=9999 Slide Four Pic: SearchBox&biw=1024&bih=600&tbm=isch&prmd=imvns&tbnid=Dr0sTllHS6ExFM:&imgrefurl= white-coat-chordae-tendineae-in-the- heart&docid=z6YbsE4M9_Zs7M&imgurl= 9QTB54TPCA&zoom=1&iact=hc&vpx=97&vpy=264&dur=2531&hovh=201&hovw=251&tx=142&ty=200&sig=113621735808706121368&page=1&tb nh=132&tbnw=169&start=0&ndsp=18&ved=1t:429,r:12,s:0,i:95 Slide Five Pic: prmd=imvns&tbnid=yEOe3S5LZp4fSM:&imgrefurl= Valves.html&docid=02cjwJB5f40eUM&imgurl= valves.jpg&w=423&h=301&ei=esCGT6mjEca22gWMk9mRCQ&zoom=1&iact=rc&dur=1&sig=116640695688943885148&page=2&tbnh=164&tbnw=2 46&start=12&ndsp=15&ved=1t:429,r:5,s:12,i:113&tx=172&ty=74:113&tx=172&ty=74 Slide Six Pic: 89&tbm=isch&prmd=imvns&tbnid=fN-hD8j8ObctmM:&imgrefurl= LqB6Z6kXvu4DM&imgurl= jxEsmw2QXsvKjnCA&zoom=1&iact=rc&dur=1&sig=116640695688943885148&page=1&tbnh=152&tbnw=194&start=0&ndsp=12&ved=1t:429,r:1,s:0,i:71&tx=65&ty=53,s:0,i:71&tx=65&ty=53 Slide Eight Pic: &prmd=imvns&tbnid=hwZkCLFyMOBjnM:&imgrefurl= gurl= oom=1&iact=rc&dur=120&sig=116640695688943885148&page=1&tbnh=142&tbnw=178&start=0&ndsp=13&ved=1t:429,r:11,s:0,i:147&tx=104&ty =62147&tx=104&ty =62 Slide Nine Pic: h&prmd=imvns&tbnid=AEs0HCYB5VH2BM:&imgrefurl= 200&hovw=252&tx=171&ty=110&sig=116640695688943885148&page=2&tbnh=148&tbnw=187&start=12&ndsp=17&ved=1t:429,r:3,s:12,i:175 Essentials of Human Anatomy by Bartholemez

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