The Muscular System
What are the three types of muscle?
Skeletal, Smooth, and Cardiac
What is the skeletal system made up of?
Bones, cartilage and ligaments
What does the nervous system allow?
It is responsible for our thoughts, our emotions, our senses, and our movements
Which type of blood vessel carries blood away from the heart?
Arteries
Which two structures does the trachea lead to in the lungs?
The trachea leads to two bronchi (one is called a bronchus).
What is the type/location of skeletal muscle?
It is voluntary and mainly attached to bones
What are the functions of the skeletal system?
Supporting the body
Giving the body shape
Protecting internal organs
Movement
Producing blood cells
Storing minerals and helping maintain mineral homeostasis
How do neurons communicate with one another?
Neurons communicate with one another and with the organs they control by passing a minute electrical current called an action potential
Tiny blood vessels with thin walls, adapted to allow dissolved substances to move between the blood and cells in other tissues.
Capillaries
What are the tiny air sacs in the lungs called?
The tiny air sacs are called alveoli (one is called an alveolus).
What is the type/location of Smooth muscle?
It is involuntary and mainly in organs
Why are bones hard, but not brittle?
Bones are hard but not brittle because they are made of a combination of flexible collagen and mineral crystals.
What makes up the Central Nervous System?
The brain and the spinal cord
From which chamber of the heart does blood leave to go to the lungs?
Right atrium
What happens when we exhale?
The diaphragm relaxes and moves upwards.
What is the type/location of Cardiac muscle?
It is involuntary and only in the heart
Which type of bone is embedded in tendons?
Sesamoid bone
What makes up the Peripheral Nervous System?
It is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
Which valve prevents blood flowing back into the left atrium from the left ventricle?
The tricuspid valve
What happens when we inhale?
How many arrangements can the fascicles be in?
Fascicles can be parallel, circular, convergent, pennate, fusiform, or triangular.
Which type of bone cell divides to produce new bone cells?
Osteogenic cells, which are located in the periosteum covering the bone.
What do Acetylcholine neurotransmitters do?
Acetylcholine is an excitatory neurotransmitter, meaning it makes cells more excitable. It is found in the nerves in the body, where it stimulates muscles and glands.
Which chamber produces the highest pressure in the blood?
Left atrium
Where is oxygen held?
In the hemoglobin molecule in the blood