Which cells carry oxygen from the lungs to the rest of the cells in the body? (1 point)
Red blood cells.
how does the body help maintain homeostasis?
The body helps maintain homeostasis through various mechanisms such as:
1. Temperature regulation: The body uses sweating and shivering to regulate its temperature and maintain a stable internal environment.
2. Blood sugar regulation: The body regulates blood sugar levels through the actions of insulin and glucagon, which help maintain a stable glucose concentration for proper cellular function.
3. Fluid balance: The kidneys regulate the balance of water and electrolytes in the body to maintain proper hydration and balance of bodily fluids.
4. pH regulation: The body maintains a stable pH by buffering acidic or alkaline substances and regulating the levels of carbon dioxide and bicarbonate ions in the blood.
5. Blood pressure regulation: The body controls blood pressure through mechanisms like vasoconstriction and vasodilation to ensure adequate blood flow to organs and tissues.
6. Oxygen and carbon dioxide balance: The respiratory system regulates the intake of oxygen and removal of carbon dioxide to maintain proper gas exchange and cellular respiration.
7. Waste elimination: The kidneys and liver remove waste products from the blood, ensuring the elimination of toxins and maintaining optimal metabolic function.
These are just a few examples of how the body maintains homeostasis, but there are several other mechanisms and systems involved in this process.
answers:
it delivers nutrients to the cells
it delivers oxygen to the cells
it help transport waste out of the cells and the body
it carries carbon dioxide away from the cells and breathed out of the body
all of the above
All of the above answers are correct. Red blood cells play a vital role in delivering nutrients, oxygen, and removing waste such as carbon dioxide from the cells and the body. They transport oxygen from the lungs to the cells and carry carbon dioxide away from the cells to be breathed out as waste. Additionally, they help transport nutrients to the cells and assist in removing metabolic waste products from the cells and the body.
what is the function of the execratory system
answers:
the system is responsible for digestion
the system is responsible fort taking in oxygen and removing carbon dioxide
the system is responsible for transporting blood throughout the body
the system is responsible for removing waste in the body
The correct answer is: the system is responsible for removing waste in the body.
The excretory system, also known as the urinary system, is responsible for filtering and eliminating waste products from the body. It includes organs such as the kidneys, ureters, bladder, and urethra. The kidneys filter the blood and produce urine, which contains waste products such as urea, excess water, and electrolytes. The urine is then transported to the bladder through the ureters, stored in the bladder, and eventually eliminated from the body through the urethra.
which organ is responsible for absorbing nutrients by the body?
The organ responsible for absorbing nutrients in the body is the small intestine.
when you get home, you smell cookies baking. You respond by waling toward the kitchen. Many signals move through your nervous system in this process. which component is involved first?
The component involved first in this process is the sensory receptors. When you smell cookies baking, the sensory receptors in your nose detect the scent and send signals to your brain to interpret the smell. This initial sensory input triggers the subsequent signals and responses that occur as you move towards the kitchen.
answers:
axons in your sensory neuron
dendrites in your motor neurons
axons in your motor neurons
dendrites in your sensory neurons
The correct answer is: dendrites in your sensory neurons.
When you smell cookies baking, the dendrites in your sensory neurons located in your nose are responsible for detecting the odor. They receive the sensory input and transmit the signals to the brain for processing and interpretation. Hence, the involvement of dendrites in your sensory neurons is the first component in this process.
what part of a nerve cell, a neuron, is responsible for receiving messages from other neurons?
The part of a neuron that is responsible for receiving messages from other neurons is called the dendrites. Dendrites are branch-like structures that extend from the cell body of a neuron and receive signals or messages from other neurons through specialized connections called synapses. These incoming signals are then passed along to the cell body and eventually transmitted to other neurons through the axon. Thus, dendrites play a crucial role in receiving and integrating incoming signals in a neuron.
Which of the following observations could you make based on stimuli to your thermoreceptors? (1 point)
Answers:
The Ice cream is sweet
The Ice cream is white
The Ice cream is cold
The Ice cream is heavy
The correct answer is: The ice cream is cold.
Thermoreceptors are sensory receptors that detect temperature changes in the environment or in the body. When stimulated by cold temperatures, thermoreceptors send signals to the brain indicating the presence of cold. Therefore, based on stimuli to your thermoreceptors, the observation you could make is that the ice cream is cold.
A girl has her eyes shut and is standing inside a brightly lit room. What happens to her pupils when she opens her eyes? Why? (1 point)
Her pupils grow because the muscles contract.
Her pupils shrink because the muscles contract.
Her pupils grow because the muscles relax.
Her pupils shrink because the muscles relax.
The correct answer is: Her pupils shrink because the muscles contract.
When the girl opens her eyes in a brightly lit room, her pupils undergo a constriction or shrinking. This occurs due to the contraction of the muscles in the iris, specifically the sphincter pupillae muscles. The purpose of this constriction is to reduce the amount of light entering the eye and thereby protect the sensitive tissues inside the eye from excessive brightness.
How do wolves maintain homeostasis during cold winter nights? (1 point)
They find shelter that blocks them from the wind.
Their metabolism speeds up to produce heat.
Their thick fur retains heat.
All of the above.
hich example shows an organism that cannot reach homeostasis through internal changes? (1 point)
Circulation decreases in a bird when it becomes too warm.
A dog shivers when it is too cold.
A person gets a fever in response to a flu infection.
A lizard is cold, and it moves to a sunny rock to warm up.
For maintaining homeostasis during cold winter nights, the correct answer is: All of the above.
Wolves employ various mechanisms to maintain homeostasis during cold winter nights. They find shelter that blocks them from the wind, helping to reduce heat loss. Their metabolism speeds up to produce heat, which helps in maintaining their body temperature. Additionally, wolves have a thick fur coat that helps retain heat and insulate their bodies.
Regarding the example that shows an organism that cannot reach homeostasis through internal changes, the correct answer is: A lizard is cold, and it moves to a sunny rock to warm up.
In this example, the lizard is unable to reach homeostasis through internal changes alone. Instead, it engages in a behavior called behavioral thermoregulation by moving to a sunny rock to warm up. Homeostasis typically involves internal physiological mechanisms to maintain a stable internal environment, but in this case, the lizard relies on an external heat source to regulate its body temperature.