In Biology we just finished viewing the topic of drugs, and now we continued with the topic of the Endocrime system, so our teacher gave us some questions:
2)Search a picture which shows the glands which secrete hormones in the human body
State the effects of adrenaline
Choose a picture which shows a situation in which adrenaline is secreted. Explain
1)Hormones are chemical substances that help to regulate processes in the body
In Biology we started with our new topic: drugs. Since there are different types of drugs Male assigned to different groups the different types to make a presentation about them. I got Cannabis and worked with Luli, Tomi and Bauti. We had to present our topic in ClassTools. Here is our work:
5. Booklet page 9 exercise 2: The cornea bends or refracts the light rays for the lens to bend and focus them on the fovea (if there is a bright light, on cones) or throughout the retina (if there is dim light, on rods).
-stimulus: a bright light. >> receptor: cones >> coordinator: brain >> effector: radial and circular muscles >> effect: circular muscles contract while radium relax >> response: the pupil constricts.
-stimulus: a dim light. >> receptor: rods >> coordinator: brain >> effector: radial and circular muscles >> effect: circular muscles relax while radium contract >> response: the pupil gets dilated.
CIRCULAR MUSCLE vs RADIUM MUSCLE: Antagonistic muscles
7. : In the dark room light is focused all over the retina, where the rodes are. Rodes are stimulated the, but rodes are of black and white vision only. So you see only shapes, not colors.
8.Animations to learn how the eye focuses on a nearby and a distant object.
9.If a close object is focused, the light rays coming will be diverging so they will need a lot of bending. The ciliary muscles contract, the suspensory ligaments go slack and the lens becomes shorter and fatter.
A synapse is what happens when chemical signals pass from one cell to another. It occurs in the synaptic cleft, which is the tiny gap between the pre-synaptic neuron and the post-synaptic neuron.
Every pre-synaptic neuron has vesicles inside, near the pre-synaptic membrane. Each vesicle contains thousands of neurotransmitters. When the pre-synaptic neuron gets “excited” by an axon potential it’s vesicles diffuse through the cell membrane and release their content into the synaptic cleft.
Following, the tiny receptors of the post-synaptic neuron interact with the neurotransmitters. These ones bind into the receptors and cause an action as result. Likelihood can be increased and the cell becomes activated firing an action potential or it can be decreased.
Finally, the neurotransmitters molecules left in the synaptic gapdrift away by diffusion, or go back to the vesicles to be reused by a process called re-uptake, or are broken down by enzymes and component parts go back to the pre-synaptic neuron.
For our biology class, our teacher, Male, told us to do presentations on pathogens, how they work, how can we try to get rid of them and more. In my group we aimed our presentation for kids. I did mine with catalina rela, catalina grosso and delfi miy uranga.
In our Biology class we started seeing the Enzimes and how they work. To help us understand the topic we went to the lab and worked on Catalase and what effect did Temperature have on them. On her blog male gave us a task for us to comoplete in groups. Here is mine:
In our Biology class we worked with cells and how they can be differenced. We were asked by our Biology teacher to make a diagram of animal and plant cells and then state the functions of each component of the cells, I did my work with Epi Nicora. Here’s our work.
1) Construct a table to compare the characteristic features of animals, plants, fungi, protoctists and prokaryotes: number of cells, differences in the cell structure, nutrition. You can upload the activity as a PDF file on your blog.