Skeletal System
How many bones are in the human body?
206
What is the main organ of the circulatory system?
heart
__________ is a series of pressure waves within an artery caused by the contractions of the left ventricle
pulse
What is blood?
A liquid medium of connective tissue that distributes nutrients and gases throughout the body and fights disease.
What does the main organ of the integumentary system?
skin
What are the two skeletons in your body?
axial & appendicular
What 2 systems makeup the circulatory system?
Cardiovascular + Lymphatic
What is the upper chamber of the heart
What is the lower chamber?
atrium
ventricle
Plasma is ____% water
90
What is the largest organ in the human body?
skin
Surface of long bone that contains a network of blood vessels, which supply nutrients, and nerves, which signal pain
periosteum
What is the wall that separates the right and left side of the heart?
septum
_________ are flaps of tissue that open in only one direction
valves
What is another name for red blood cells?
erythrocytes
What is the pigment that determines your hair & skin color?
Melanin
narrow channel in the center of each cylinder in which Blood vessels run through to create a network that carries nourishment to the living bone tissue.
Haversian canal
Which side of the heart pumps to the lungs
right
____________ is the force that blood exerts against the inside walls of a blood vessel
blood pressure
Name 2 different types of white blood cells we have studied?
lymphocytes
phagocytes
What is the outer-layer of skin called?
Inner?
Epidermis
dermis
What are the 5 types of movable joints? Name examples!
hinge, ball & socket, saddle, gliding, pivot
Examples:
saddle = thumb
ball & socket = shoulder & hip
hinge = elbow & knee
gliding = foot
pivot = neck
Name all 3 circulation and what they do
Systemic: pumps blood to everything BUT the lungs
Pulmonary: pumps blood to the lungs
Lymphatic: Immune system helps fight disease
Who discovered the circulation of the heart & name one old incorrect theory
William Harvey
Incorrect Theory
1) that your heart pumps new blood every time
2) that your blood evaporates through your skin
What do red & white blood cells do & what is the difference?
Red: delivers oxygen and nutrients
white: fights illness
What type of tissue is in the epidermis?
epithelial