Bone-anza
What is the substance called that surrounds the cells of a bone?
Bone matrix
What bone is often called the kneecap?
Patella
What are the 4 types of joints we talked about?
Hinge, ball-and-socket, saddle, washer
What are the 3 types of muscles?
Skeletal
Smooth
Cardiac
Do humans have an endoskeleton or an exoskeleton?
Endoskeleton
What 2 materials make up the bone matrix?
Collagen and minerals
What is the largest bone in the body?
Femur - represents 25% of a person's height
True or False: The hinge joint has very little stability.
FALSE - the hinge joint is very stable due to its limited range of motion.
What is the difference between voluntary and involuntary?
Voluntary means you can control it with conscious thought. Involuntary means you can't control it with conscious thought (it does it on its own).
What is the small patch of cells in the heart called that produces electrical signals that turn on and off about 100 times per minute?
Sinoatrial node
Which bone type has the collagen and minerals packed tightly together?
Compact bone
What bone is in the lower arm on the THUMB side?
Radius
Where are washer joints located?
In the vertebral column
Involuntary
What is the sheath of tissue called that covers the outside of the bone called?
Periosteum
What part of the skeleton supports and protects the head, neck, and trunk?
Axial skeleton
What bone is often called the backbone or spine?
Vertebral column
What is the articular capsule? What are the 2 components of the capsule?
The articular capsule is a "bag" that surrounds most joints. It is made of a fibrous capsule and a synovial membrane that produces synovial fluid.
What muscle is found only in the heart?
Cardiac
What is the small smooth muscle located in the dermis that automatically contracts when you get cold or nervous?
Arrector pili muscle
What slippery substance coats the joints to reduce friction between bones/cartilage? (It's almost like an egg white)
Synovial fluid
What bone is the shin bone in your lower leg? What bone is the LITTLE bone in your lower leg?
Shin bone = tibia
Little bone = fibula
How does stability of a joint change when you increase the range of motion of that joint?
Increasing the range of motion DECREASES the stability.
How is skeletal muscle different from cardiac muscle and smooth muscle.
Skeletal muscle is voluntary, while smooth and cardiac muscles are involuntary.
What is the difference between ligaments and tendons?
Ligaments hold the bones of a joint together, while tendons connect muscle to bone.