the portion of the skeleton that supports and protects the head, neck, and trunk
define appendicular skeleton
the portion of the skeleton that attach is the exile skeleton and has the limbs attached to it
a body covering, typically made of a tough, flexible substance called chitin, that provides support and protection
two or more different organisms living together so that each benefit from the other
what three things make up the human superstructure?
the human superstructure is made up of the skeleton, the muscles, and the skin
what are the two main differences between smooth muscles and skeletal muscles
one major difference is their appearance. Smooth muscles are smooth and unstripped will skeletal muscles are ruugh and striped. The other main difference is the way they operate skeletal muscles are voluntary they are operated by come to consciously thinking about it, so smooth muscles are involuntary there are apperatated unconsciously by the brain.
where is the cardiac muscle found? Is it an involuntary muscle or voluntary one?
the cardiac muscle is in the heart. It is an involuntary muscle
what is produced in the bone marrow?
the bone marrow produces blood cells
what is keratinization? what is it for?
it is a process that hardens living cells. It is used to make the outer layer of the epidermis, as well as hair and nails. Remember, it kills cells.
is the difference between compact bone tissue and spongy bone tissue?
bones are made up of collagen and minerals. The collagen makes the bones flexible, well the minerals make them hard and strong.
what two principal substances make up phone? What qualities do they each provided the phone?
Compact bone tissue is packed together tightly well spent the bone tissue has lots of space in between is fine burgers because of this, spongy bone tissue is lighter than contact bone tissue.
are bones alive?
phones are definitely a life. There are living cells embedded in the bone. Yes, bone tissue is living tissue. That's why it can grow
what is the difference between an invertebrae and a vertebrae? Is it possible to be neither?
vertebrates or animals with backbones. Invertebrates are animals without backbones. It is possible to be neither.
your are part of the appendicular skeleton or the exoskelaton? What about your neck?
according to the definitions, the arms belong to the appendicular skelatin, but the neck is a part of the axe style it in.
what is the difference between an endo skeleton and an exo skeleton? what do we call organisms with exo skeletons?
I'm actually go to is a support structure that exist outside of an organism, well I'm at endoskelatin is on the inside of an organism. Creatures of excess don't ans are called arthropods.
what is the following joints in terms of increasing range of motion then order them in terms of increasing stability cool and ball and socket, hinge, saddle.
ball and socket, battle, and.hinge
what purpose do the gym and serving your joints? What about cartilage?
leggins tend to hold bones out of the joints together. Cartilage Christians to the bones of the day do not lead to other.
do skeletal muscles attach to the skeleton?
skeletal muscles and tendons Pete, and the tendons attach to the skeleton.
describe how the biceps and triceps work together to move the forearm.
in order to raise the forearm, the biceps contrasts well the triceps relaxes. To extend your arm, the bicep relaxes what the triceps contracts.
is the stomach composed of smooth muscle or skeletal muscle?
the stomach is made of smooth muscle.
a sunflower well actually turn throughout the day so it follows the Sun across the sky. What is the term used to describe this?
Plant City to grow toward the light is called photo true system
what are the two main functions of hair?
hair is used to insulate and provide sensation.
what are the two main functions of sweat?
sweat cool body down and also provides food for beneficial bacteria and fungi which live on your skin.
why do your skin cells constantly fall off your body?
skin cells constantly feel of your body because the cells on the outer layer are dead
what is this sebaceous glands produce, and what are the substances's two main purposes?
they produce oil. This ordeal softens the skin and hair and also makes it hard for certain bacteria to text in soft your skin.
send the following animals classified each as a mammal, bird, reptile, or amphibian. A. The animal has hair. B. the animal breathes through its skin. C. The animal has scales. D. the animal has feathers.