Lab (Week 8): Skeletal System

Cartilage cells are: -fibrocytes -osteocytes -chondrocytes

Chondrocytes: They lack blood vessels, so slow to heal.

Osteoclasts increase/decrease blood calcium levels: -decrease -do not affect -increase

increase

This type of connective tissue connects bone to bone? -areolar connective tissue -ligaments -muscles -tendons

ligaments

Fluid filled sacs in synovial joints are called: -Synovia -Menisci -Bursae

Bursae: Fluid filled sacs that cushions certain joints & reduce friction between tendons & ligaments.

What disorders of the skeletal system have Inflammation of bursa? -Bursitis -Osteoporosis -Fracture

Bursitis: Inflammation of bursa.

What has Dense mineralized outer layer? -Compact bone -Spongy bone

Compact bone: Dense mineralized outer layer.

Osteoblasts increase/decrease blood calcium levels: -Increase -Decrease

Decrease

Growth hormone directly stimulates the growth of the _________ plate and bone growth during childhood. -Epidermal -Parathyroidal -Diaphyseal -Epiphyseal

Epiphyseal

What disorders of the skeletal system have broken bone? -Tendonitis -Fracture -Bursitis

Fracture: Broken bone

Immature cells that secrete calcified material (bone forming cells) are: -Osteoclasts -Osteocytes -Osteoblasts

Osteoblasts: bone forming cells. -Cells that secrete calcified material that surrounds the cells. -Calcium is removed from blood & put into bones, reducing blood calcium levels.

This type of connective tissue connects bone to bone: -Ligaments -Tendons

Ligaments: attach bone to bone. Connective tissue that connects bone to bone.

Formation of bones is called: -Osteofication -Ossification -Condrofication

Ossification

What disorders of the skeletal system have Deterioration of cartilage @ joints? -Sprains -Bursitis -Osteoarthritis

Osteoarthritis: Deterioration of cartilage @ joints.

Are building the matrix up are called? -Osteoclasts -Osteoblasts

Osteoblasts: are building the matrix up.

What has Bone absorbing cells; chaos. These are bones cells on the outer edge of bones. They release enzymes that eat away @ the bone, releasing minerals into the blood, increasing calcium levels in blood: -Osteoclasts -Osteoblasts -Osteocytes

Osteoclasts: Bone absorbing cells; chaos. -These are bones cells on the outer edge of bones. -They release enzymes that eat away @ the bone, releasing minerals, increasing calcium levels in blood.

Removing the bone matrix are called? -Osteoclasts -Osteoblasts

Osteoclasts: are removing the bone matrix.

What disorders of the skeletal system have When more bone is reabsorbed than is formed, causing bones to become weak & brittle? -Bursitis -Osteoporosis -Fracture

Osteoporosis: When more bone is reabsorbed than is formed, causing bones to become weak & brittle.

This hormone increases blood calcium? -Calcitonin -PTH -Estrogen -Growth hormone

PTH

Which hormone targets osteoclasts? -Calcitonin -PTH

PTH

This hormone increases blood calcium: -Growth hormone -Calcitonin -Parathyroid hormone

Parathyroid hormone: Produced by the parathyroid gland - accelerates calcium's removal from bone, increasing blood calcium.

The fibrous outer covering of the bone, contains nerves, blood vessels, lymphatic vessels that help in bone repair and growth: -Periosteum -Tendons -Compact bone

Periosteum: Fibrous outer covering of the bone, contains nerves, blood vessels, lymphatic vessels. -Function: Bone repair & growth.

What disorders of the skeletal system have Chronic inflammatory disorder of the joints? -Bursitis -Rheumatoid Arthritis -Osteoarthritis

Rheumatoid Arthritis: Chronic inflammatory disorder of the joints.

What has Inner layer w/ open network filled w/ marrow? -Compact bone -Spongy bone

Spongy bone: Inner layer w/ open network filled w/ marrow.

What disorders of the skeletal system have When ligaments are torn/stretched? -Sprains -Bursitis -Osteoarthritis

Sprains: When ligaments are torn/stretched.

What disorders of the skeletal system have Inflammation of tendon sheath? -Tendonitis -Fracture -Bursitis

Tendonitis: Inflammation of tendon sheath.

Calcitonin is produced by the ______ gland: -Parathyroid -Thyroid -Anterior pituitary -Hypothalamus

Thyroid Calcitonin: Produced by the thyroid gland- a hormone that decreases blood calcium levels, deposits calcium into the bone.

Which hormone ensures that the skeleton grow with the proper proportions ? -Growth hormone -Calcitonin -Parathyroid hormone -Vitamin D -Thyroid hormones

Thyroid hormones

Which hormone ensures that the skeleton grow with the proper proportions? -Vitamin D -Thyroid hormones -Parathyroid hormone -Growth hormone

Thyroid hormones

Which hormone helps you to absorb calcium from your digestive system? -Growth hormone -Vitamin D -Thyroid hormones -Vitamin E -Vitamin C

Vitamin D: Converted to a hormone causing the intestines to absorb calcium.