Question | Answer |
internal skeleton | endoskeleton |
Composed of bone which is a strong and none brittle material and 206 individual bones in the Skelton | endoskeleton |
ex) arms hands legs and feet | Jointed appendages |
1 bone meets another where movement occurs | Joints |
elastic tissue that holds together the skeleton | Ligaments |
What are the 2 groups of the nervous system | -CNS
-Peripheral nervous system |
consist of the brain and the spinal cord | CNS |
includes nerve that brings information to the brain and transmits commands from it | Peripheral nervous system |
What are the 2 advantages of a closed circulatory system | - The body can maintain different circulation rates in different organs by changing the diameter of the blood vessels
- It allows blood to be pumped under pressure |
humans are coelomates it means that we contain a large body cavity called a coelom and that develops within the mesoderm tissue within the embryo | Coelomates |
What is in the coelom | is the large organs that supports there weight and prevents them from being deformed by body movements |
What are the 2 advantages of being Endothermic | - it promits the body to maintain its activity at all time and in many different places regardless of the surrounding temperatures
- It promits to sustain strenuous activity |
What are the 4 types of tissues | - Epithelial
- Connective
- Nerve
- Muscle |
it Covers body tissue or surface | Epithelial Tissue |
Protects tissues beneath from dehydration and physical damage | Epithelial Tissue |
decides what substance enter and leave the cell through the body | Epithelial Tissue Controls diffusion |
the cells are typically flat or thin | Epithelial Tissue |
The cells are constantly being Replaced throughout your life | Epithelial tissue |
Provides the body with its Structural building blocks and its most potent defenses | Connective Tissue |
What are the 3 functions of Connective Tissue | - The cells of the Immune system and they defend the body from infection and possibly cancer
- Skeletal system: the fibro blasts
- These cells Accumulate/transport molecules |
engulfs and dig bacteria and other microbes | In the immune system we have Macrophages |
these make antibody's or they attack the viruses infected cells or cancer cells | Lymphocytes |
the most common connective tissue they are flat and irregularly shaped cells and they also produce the scare tissue | Fibroblasts |
its firm and flexible and very strong its at poisons of mechanical stress and it also covers the ends of the bones at joints | Cartilages |
these are specialized for the transition of nerve implosive | Neurons |
insulate the neurons and provide them with nutrient | Supporting cells |
What are the 3 typed of muscle tissue | - smooth
- skeletal
- Cardiac |
they are long and spinal shaped and they line our cavity’s | Smooth |
these are striated and they move the endoskeleton | Skeletal |
At the heart | Cardiac |
What has neurons and supporting cells | Nerve tissue |
maintaining a internal constant environment | Homeostasis |
stable fluid environment is one of the key achievements of a multi cellular organism and it is maintained by complex set of philological meconium's | Homeostasis |
What are the 2 feedback loops | Negative feedback
Positive feedback |
this is the prevents a variable for deviating from its normal value which is called its set point | Negative feedback |
this is a change in the variable that causes the body to drive the variable even further from the initial value | Positive feedback |
small marble sized region in brain and the Brain Stem maintains homeostasis | Hypothalamus |
What are the 2 types of signals | Electrical and chemical signals |
last for brief period, carried by neurons | Electrical signal |
slowly transmitted by bloodstream, last a long time | Chemical signal |
a chemical messenger produced in one place a transported to another to produce physiological response | Body uses hormones |
Specifically with receptor cell | Hormones |