Bone Lecture 8

Oxygen storing protein that only has one protein subunit (hemoglobin has 4)

A neuron and the muscle fibers that innervate it

involuntary, innervated by the autonomic nervous system, Contain ONE nucleus, intermediate filaments, and thick and thin filaments (but are not organized into sarcomeres)

Avascular (no blood vessels)

Bone cell

Many sarcomeres positioned end to end

made of the protein actin

create a uniform muscle contraction allowing the action potential to spread through the muscle cell more rapidly

SKin, hair, nails, glands, and some nerve endings

• 1. Body mov't
• 2. Stabilization of body position
• 3. Mov't of substances through the body
• 4. Generating heat to maintain body temperature

Specialized endoplasmic reticulum that surrounds the muscle cell

Contain gap junction which allow action potential to spread from one cardiac cell to the next via electrical synapses

Living tissue that functions to support soft tissue, protect internal organs, assist in body mov't, mineral storage, blood cell production, and energy storage.

Bone-forming cell

Connects muscle to bone

Small regions of increased density in the sarcoplasm of skeletal muscles to which myofilaments seem to attach

The smallest functional unit of skeletal muscle; composed of protein thick and thin filaments

Red blood cell development; spongy bone

Upon contraction pulls dense bodies together

Increase in muscle cell diameter and change in muscle conformation

Assist the agonist by stabilizing the origin bone or by positioning the insertion bone during the mov't

Vascular connective tissue

An organ that functions in thermoregulation, protection, env'tal sensory input, excretion, immunity, blood reservoir, and vitamin D synthesis

Contains adipose cells for fat storage; surrounded by compact bone

Modified membrane that wraps several myofibrils together to form a muscle cell or muscle fiber

Connects bone to bone

Made of the protein myosin

Flexible, resilient, connective tissue

Absorption of bone, as in the formation of canals

Striated (composed of sarcomeres), contains only ONE nucleus, and is separated from its neighbor by intercalated disc; involuntary, larger and more numerous mitochondria

1. Skeletal muscle

2. Cardiac muscle

3. Smooth muscle