A
What is considered the be the largest organ the human body has?
the skin
What does contract mean
to shorten
What are highly organized tissue that controls our body's movement
Muscles / muscular system
to lengthen or elongate
What are our skeletal muscles
voluntary muscles that we control- give us power and strength
What are the three layers of skin called?
Epidermis, dermis, and hypodermis
Which bone has a natural S shape that protects from physical trauma
Vertebral column/ spine
Muscle movements are a series of _______ing and _____ing
Contracting and relaxing
Which bone protects our brain and connects to our spinal column?
The skull
What are the 3 types of muscles?
Smooth, cardiac, and skeletal
What is the cardiac muscle and how does it work
our heart- pumps blood out by contracting and lets blood back in my relaxing
Which layer of skin is fat connected to bones and tissue, it also acts as insulation
Hypodermis
Which skin layer is as thin as a sheet of paper, is water proof and germ proof, and contains melanin
Epidermis
Which bone surrounds the organs in your chest and helps with respiration
rib cage
The dermis
What are bands of tissue that connect muscle to bone
tendons
What is the soft, gel like padding between bones
cartilage
What are bands of tissue that connect bone to bone
ligaments
What are smooth muscles?
Involuntary muscles such as our digestive tract, bladder, eyes, and respiratory tract
What types of nerve cells are sent down our spine to send messages to our muscles
motor neurons
What are the 5 functions of skin?
1. Provides a barrier
2. Controls body temp
3. Gathers information
4. Helps get rid of waste
5. Acts as a sunblock
What are the 5 functions of the skeletal system?
1. gives us human shape
2. allows movement
3. produces blood cells
4. protects organs
5. stores minerals
How do our muscles become energized?
How many bones are in the human body
206
The skeleton can be divided into three large parts:
skull, trunk, and limbs