Biology ：Locomotion and Support

Human Skeletal System

Last updated 12/2021

English

What you'll learn

can explain the function of bones
can state all bone's name
learn locomotion in human (arm and leg)
learn some consequences of impaired musculoskeletal system on support and locomotion

3 sections • 9 lectures • 42m total length

Human Skeletal System8:33
Discover how locomotion and support arise from hydrostatic, exoskeleton, and endoskeleton systems, and explore the human axial and appendicular skeleton, including skull, vertebral column, ribs, and bones.
Characteristic Of Each Vertebra8:07
Explore the distinctive features of cervical, thoracic, and lumbar vertebrae, including atlas and axis with dens and transverse foramina, and overview the shoulder and pelvic girdles and limbs.
Structure Of Joint4:24
Explore the structure of joints, including immovable, slightly movable, and freely movable synovial joints, and how ligaments connect bones while tendons link muscles.
Skeletal Muscles And Locomotion In Human4:34
Explore skeletal muscles as voluntary, striated tissues with actin and myosin filaments driving contraction, enabling antagonistic pairs like biceps and triceps to bend and straighten the arm during walking.
Consequences Of Impaired Musculoskeletal System On Support And Locomotion3:19
Examine how impaired musculoskeletal health affects support and locomotion, covering cramps, muscular dystrophy, osteoporosis, and arthritis, with causes and preventive actions like warming up, diet, exercise, and weight management.

Locomotion In Earthworm , Grasshopper and Bird5:13
Examine locomotion in earthworm, grasshopper, and bird: hydrostatic skeleton and coelom with peristaltic waves; grasshopper's chitin exoskeleton, jumping hind legs, and bird wing flapping to produce lift.
Locomotion In Fish3:39
Learn how fish locomotion uses an endoskeleton and streamlined body with myotomes, and fins to swim against water flow, propelling forward with the caudal fin and buoyancy from swim bladder.

Terrestrial Plants2:35
Terrestrial plants divide into woody and herbaceous forms; wood forms from secondary xylem for support. Woody tissues include sclerenchyma and xylem, while herbaceous rely on parenchyma and collenchyma.
Aquatic Plants1:45
Explore aquatic plants, including submerged and floating types, such as hydrilla and water hyacinth, and learn how buoyancy, aerenchyma tissues, and air sacs keep them afloat while enabling gas exchange.

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