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the skull, spine and rib cage form the
how many bones are in the human body and how many make up the axial skeleton and appendicular?
- body- 206
- axial- 80
- appendicular- 126
the shoulders , arms, hands, hips, legs and feet form the
how many bones in the skull?
how much does the bones in a human body weigh?
What is organic component?
cells and matrix
what is inorganic matrix?
what are the three layers of bones?
- compact bone
- cancellous bone and marrow
The first layer of the bone (covers the bone), responsible for life of bone and for repair
the inner layer is loose connective tissue and contains
anchors periosteum to bone and penetrate the underlying bone matrix
hard, dense and very strong bone, forms outer layer needed for strenght
bone that is found inside of bone, lighter in weight and is not as strong as compact bone.
gelatinous material that produces white blood cells, red blood cells, or platelets.
strong but is more elastic than bone, found where bones join together.
articulations is another term for what structure?
areas where two bones come together?
joints or articulations
(joint)sutures of the skulls, do not move
(joint) made of connective tissue and cartilage, move very slightly
(joint)movable joints that account for most joints in the body
system that gives abolity to walk, stand, run, jump, move eyes, smile, and frown.
the tightening of a muscle, during which it becomes shoretr and thicker.
when a muscle returns to its originsl form or shape.
place where the muscles begins(originates)
place where the muscle ends(inserts)
what are the four disorders of the muscular system?
- progressive muscular dystrophy
WHat does the cardiovascular system consist of?
- circulatory system
- lymphatic system
heart muscle disease, cause in unknown adn usually leads to heart failure
cause by a buildup of cholesterol plaques in coronary arteries, which reduce blood flow to the heart
coronary artery disease
inflammation of the endocardial layer of the heart, can cause bacteria, virus, tuberculosis, or cancer
heart no longer pump an adequate supply of blood
inflammation of the pericardial layer of the heart
what are the two primary functions of the circulatory system?
- transport oxygen and nutrients to the ody cells
- regulates body temperature and maintain chemical stability
what are the upper and lower chambers of the heart?
- upper- atria, receive blood
- lower- ventricles, pump blood
the right side of the heart pumps blood to
the left side of the heart pumps blood to
the rest of the body
where is the tricuspid valve found?
b/w right atrium and right ventricle
where is the mitral valve found?
b/w left atrium and left ventricle
"blank" allows blood to flow from the right ventricle into the pulmonary artery.
pulmonary semilunar valve
blood flows from the left ventricle into the
right atrium recives blood from the
superior and inferior venae cavae
blood flows from the right atrium into the
right ventricle receives blood from the "blank" and pumps it into the "blank"
- right atrium
- pulmonary artery
left atrium receives oxygenated blood from the
left ventricle receives blood from the
what are the three main types of blood vessels?
large blood vessels that carry blood away from the heart to all regions of the body
Form a low pressure collecting system that returns waste-filled blood to the heart
form system of microscopic vessels that connect arterial and venous systems
what is the study of blood?
how much blood does the body contain?
4 to 5 L
one drop of blood contains?
- 5 million red blood cells
- 7500 white blood cells
- 300,000 platelets
straw clored fluid that transports nutrients, hormones, and waste products.
also known as erythrocytes, contain blood protein hemoglobin, transort oxygen
red blood cells
leukocytes, fight disease in the body
white blood cells
what is the primary fucntion of the lymphatic system?
contribute to yhe immune system to assist whti destruction of harmful microorganisms
what tissues make up the lymphatic system?
- lymph vessels
- lymph nodes
- lymph fluid
- lymphoid organs
what two systems make up the nervoud system?
central and peripheral nervous system
what are the two divisions of the autonomic nervous system?
sympathetic and parasympathetic
what are the 3 types of neurons as categorized according to function?
- sensory- carry impulses toward brain adn spinal cord
- motor- carry impulses away from brain adn spinal cord
- associative- carry impulses from one neuron to another
what is the function of the respiratory system?
delivers oxygen to millions of cells and transposrt the waste product carbon dioxide out of the body
what is the role of the digestive system?
takes in whole foods and breaks them down into their chemical components
what are 5 actions of the digestive system?
what are the primary functions of the endocrine system?
use chemical messengers called mones that move through bloodstream and can reach every cell in the body
what is the primary function of the urinary system?
maintain fluid volume
what are the 4 functions of the skin?
- help regulate body temp
- provides barrier that prevent bacteria from entering the body
- excretes liquids and salts
- provides sensitivity to touch
what are the appendages of the skin?
hair nails and glands