Anatomy and Skeletal System
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Questions and Answers

During a seated row, the glenohumeral joint __________ as we pull on the resistance.

extends

During a barbell back squat, the __________ joint flexes as we descend.

tibiofemoral

When using a Pec Deck, the glenohumeral joint ___________ as the hands/forearms are brought together.

horizontally adducts

Menopause and "manopause" can greatly affect __________ density.

<p>bone</p> Signup and view all the answers

During a dumbbell shrug exercise, the shoulder girdle ____________ as the dumbbells are lowered.

<p>depresses</p> Signup and view all the answers

Cartilage, tendons, aponeuroses, ligaments and bone are all types of ______ tissue.

<p>connective</p> Signup and view all the answers

______ is a mineral that would be expected to be affected by osteopenia/osteoporosis.

<p>hydroxyapatite</p> Signup and view all the answers

______ build bone, while ______ break it down.

<p>osteoblasts; osteoclasts</p> Signup and view all the answers

______'s law states that bone will specifically adapt to the imposed demands.

<p>wolff</p> Signup and view all the answers

The ______ gland produces parathormone, which affects the skeletal system.

<p>parathyroid</p> Signup and view all the answers

______ stimulates osteoclast activity.

<p>parathormone</p> Signup and view all the answers

The skeletal system is divided into the ______ and ______ skeletons.

<p>axial; appendicular</p> Signup and view all the answers

The bone located at the back and bottom (posterior/inferior) of your head is the ______ bone.

<p>occipital</p> Signup and view all the answers

[Blank] fractures are more common in post-menopausal women and tend to manifest in the neck of the femur, bodies of the 4th & 5th lumbar vertebrae, and the radiocarpal joint of the wrist.

<p>osteoporotic</p> Signup and view all the answers

[Blank]'s Law states that bone strength and mass increase and decrease as the functional forces on the bone increase and decrease.

<p>Wolff</p> Signup and view all the answers

Joints classified as ______ allow free movement and are also important for shock absorption, featuring an actual cavity, encapsulation, synovial fluid, and articular cartilage.

<p>diarthroses</p> Signup and view all the answers

[Blank] is a condition marked by abnormally decreased bone mineral density, leading to bone weakness, but is less severe than osteoporosis.

<p>osteopenia</p> Signup and view all the answers

The most common manifestation of ______ includes deformation and fractures of the lumbar vertebrae, the femoral neck at the hip, and the distal radius.

<p>osteoporosis</p> Signup and view all the answers

Regular ______ exercises, such as walking, jogging, and resistance training, are crucial to combat osteoporosis.

<p>weight bearing</p> Signup and view all the answers

[Blank] are mature bone cells

<p>osteocytes</p> Signup and view all the answers

Joints classified as ______ allow little movement and are particularly important for shock absorption.

<p>amphiarthroses</p> Signup and view all the answers

The adult human skeleton is composed of approximately ______ bones.

<p>206</p> Signup and view all the answers

The primary minerals that provide bone with its hardness and compressive strength are calcium carbonate and ______.

<p>calcium phosphate</p> Signup and view all the answers

The C1 vertebrae is also referred to as the ______, supporting the skull and enabling nodding movements.

<p>atlas</p> Signup and view all the answers

The bone tissue primarily found in the epiphyses of long bones, known for its shock-absorbing properties, is called ______ bone.

<p>trabecular</p> Signup and view all the answers

The term for shoulder blades is ______.

<p>scapulae</p> Signup and view all the answers

The process by which bone is constantly being formed and resorbed is called ______.

<p>remodeling</p> Signup and view all the answers

The pelvic bone, which consists of the ilium, ischium, and pubis when fused, is also known as the ______ bone or os coxa.

<p>innominate</p> Signup and view all the answers

The protein with high tensile strength that forms the matrix in bone is ______.

<p>collagen</p> Signup and view all the answers

[Blank] occurs when the angle of a joint increases, such as the elbow when throwing a shot put.

<p>Extension</p> Signup and view all the answers

[Blank] is extension that continues beyond the anatomical position, like looking up to see a bird in flight.

<p>Hyperextension</p> Signup and view all the answers

Movement away from the midline of the body in the frontal plane is known as ______.

<p>Abduction</p> Signup and view all the answers

The movement towards the midline of the body in the frontal plane is called ______.

<p>Adduction</p> Signup and view all the answers

Squeezing the shoulder blades together is an example of scapular ______, also known as retraction.

<p>Adduction</p> Signup and view all the answers

Movement in the horizontal plane towards the midline of the body is called horizontal ______, as seen during the pec deck exercise.

<p>Adduction</p> Signup and view all the answers

Moving away from the midline in the frontal plane along the spine, such as trying to touch your shoulder with your ear, is cervical lateral ______.

<p>Flexion</p> Signup and view all the answers

[Blank] occurs along the spine as one moves back towards the midline in the frontal plane

<p>Reduction</p> Signup and view all the answers

The bone often fractured during strangulation, crucial for speaking and swallowing, is the ______ bone.

<p>hyoid</p> Signup and view all the answers

The vertebral column consists of 33 vertebrae, with ______ cervical vertebrae, where C1 is known as the atlas and C2 as the axis.

<p>seven</p> Signup and view all the answers

When viewed from behind, ______ vertebrae look like a giraffe, while lumbar vertebrae resemble a moose.

<p>thoracic</p> Signup and view all the answers

The jelly donuts found between vertebrae, known as intervertebral discs, consist of an outer annulus fibrosus and a jelly-like nucleus ______.

<p>pulposus</p> Signup and view all the answers

The shoulder blade is anatomically referred to as the ______, while the collar bone is known as the clavicle.

<p>scapula</p> Signup and view all the answers

The innominate bone, also known as the os coxa, is formed by three bones: the ilium, ______, and pubis.

<p>ischium</p> Signup and view all the answers

A ______ is a type of joint that is immoveable; an example is the sutures in the skull.

<p>synarthrosis</p> Signup and view all the answers

A diarthrosis is a freely moveable joint; examples of these include hinge joints, like the elbow, and ______ joints, like the shoulder.

<p>ball-and-socket</p> Signup and view all the answers

Flashcards

Osteocytes

Mature bone cells.

Osteopenia

A condition of abnormally decreased bone mineral density, leading to bone weakness.

Osteoporosis

A disorder involving decreased bone mass and strength, resulting in fractures.

Wolff's Law

Bone strength and mass increase/decrease based on functional forces.

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Bone Hypertrophy

Increases in bone mass/mineral density due to osteoblast activity.

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Bone Atrophy

Decreases in bone mass/mineral density due to osteoclast activity.

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Synarthroses

No movement; necessary for growth and shock absorption (e.g., skull sutures).

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Amphiarthroses

Little movement; important for shock absorption (e.g., intervertebral discs).

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Skeleton Functions

Provides support, protection, locomotion, mineral storage, and blood formation.

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Axial Skeleton

The skull, vertebral column (cervical, thoracic, lumbar, sacral, coccygeal), and ribs/sternum.

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Appendicular Skeleton

Scapulae, clavicles, bones of the upper and lower extremities (humerus, radius, ulna, carpals, metacarpals, phalanges, femur, patella, tibia, tarsals, metatarsals).

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Atlas

C1; Allows nodding ('yes').

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Axis

C2; Allows rotation ('no').

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Bone Mineral Composition

Calcium carbonate and calcium phosphate, providing rigidity.

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Collagen in Bone

Protein providing flexibility and tensile strength to bone.

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Cortical Bone

Dense bone found in long bone shafts (diaphyses); important for weight bearing.

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Trabecular Bone

Less dense bone found at the ends (epiphyses) of long bones; important for shock absorption.

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Extension

Increasing the angle of a joint.

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Hyperextension

Extension beyond the anatomical position.

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Abduction

Movement away from the body's midline.

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Adduction

Movement toward the body's midline.

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Horizontal Adduction

Movement in the horizontal plane towards the midline.

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Horizontal Abduction

Movement in the horizontal plane away from the midline.

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Lateral Flexion

Movement away from midline in the frontal plane (spine).

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Reduction

Movement back towards the midline from lateral flexion.

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Five Functions of Skeleton

Provides support, protection, movement, mineral storage, and blood cell formation.

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Hydroxyapatite

A mineral component of bone, primarily calcium phosphate.

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Osteoblasts

Build bone tissue.

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Osteoclasts

Break down bone tissue.

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Auditory Canal Bone

Located in the temporal bone, it houses structures of the inner ear.

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Zygomatic Bone

Forms the prominence of the cheek.

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Maxilla

Forms the upper jaw.

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Parathormone's Effect on Bone

Stimulates osteoclast activity, increasing blood calcium levels and decreasing bone density.

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Foramen Magnum

Large opening in the occipital bone where the spinal cord passes.

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Calcitonin's Effect on Bone

Decreases osteoclast activity, increases bone density and reduces blood calcium.

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Atlas (C1)

The first cervical vertebra (C1), which supports the skull.

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Flexion

Movement that decreases the angle between bones at a joint.

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Thoracic Vertebrae Count & Relation to Costae

There are 12, they articulate with the ribs to form the rib cage.

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Intervertebral Discs

Fibrocartilage pads providing cushioning between vertebrae.

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Ulnar Deviation

Lateral (outward) movement of the hand at the wrist.

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Osteoarthritis

Degenerative joint disease with breakdown of cartilage.

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Rheumatoid Arthritis

An autoimmune disease causing joint inflammation and damage.

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