University:
Yeshiva University
Course:
1005C | Human Biology
Academic year:

2024
Views:

124

Pages:

16
Author:

Ruben Owens

BONE • Compact – Very dense and found on the outside of the bones • Spongy – Contains spicules and trabeculae that adds strength TYPES OF BONES • Long bones – Arm and leg bones • Irregular bones – Pelvic bones and vertebrate • Flat bones – Bones of the skull NERVOUS TISSUE • Made of neuron and glial cells and functions to transmit electrical impulses throughout the body • Neuron – nerve cell • Glial cell – support cell that help insulate and support the nerve cell NEURONS • Major features of nerve cells – Axon – Cell Body – Dendrites – Synaptic junctions – Myelin Sheath • Made of Schwann cells MUSCLE TISSUE • Functions in locomotion, digestion, breathing, vision, circulation, and other biological processes • Also used as a high protein food source • Makes up 30-40% of total body mass MUSCLE TISSUE • Skeletal – Striated and voluntary • Cardiac – Striated and involuntary • Smooth – Not striated and involuntary SKELETAL • Striated and voluntary • Primary muscle type for meat • Multinucleated with nuclei located toward the edge of the cell – Multinucleated cannot reproduce, they can only get larger – Helps with muscle growth STRIATED MUSCLE DEFINITIONS • Myofiber – muscle fiber/ cell • Myofibril – Contractile apparatus • Sarcolemma – membrane surrounding the myofiber MUSCLE ORGANIZATION MYOFIBRIL STRUCTURE SARCOMERIC STRUCTURES • A band – darker in color; runs the length of the myosin fiber • I band – lighter in color; only thin filament present • H zone – only thick filament present • Z line – End of the sarcomere where the thin filament is anchored • M line – middle of the sarcomere where thick filament is anchored CARDIAC • Striated and involuntary • Single centrally located nucleus • Varying lengths of the thin filament SMOOTH • Not striated, involuntary • Mononucleated, with nucleus in middle of the cell • Tight membrane to membrane junctions for communication between cells OBJECTIVES • Classify different tissues by their shape and number • Know the four different types of tissues • Compare and contrast different functions of tissues

Tissue Structure Chapter 2

Related Documents

Recommended Documents

Description

Related Documents

Want to Download This Document?

Free up your schedule!

Take 5 seconds to unlock