Answer:
1. sperm cells: cell has a flagellum for movement
2. smooth muscle: cells have an elongated shape (tapered at each end)
3. Squamous epithelium: cells are close together
4. Human red blood cells: cells are circular
5. Squamous epithelium cells are thin and flat, with irregular borders
6. Human red blood cells: cells are anucleate (without a nucleus)
7. smooth muscle: longest cell
Explanation:
- <em>Sperm cells</em>: Active and morphologically specialized cells. They characterize as having an elliptic head mostly occupied by the nucleus, and a tail of about 55 micrometers that moves impulsed by a motor dynein protein that uses ATP energy.
- Smooth muscle cells: Fusiform cells. Long and tapered at the extremes. Located in organs and viscera, and in vessel walls, where involuntary maintained slow contractions are needed. Although they are the longest cells, their length depends on the organ where they are located. They might reach up to 500 microns.
- Squamous epithelium cells: The wide and length of the cells supere their height. Some of them suffer a process of keratinization from being exposed to dehydration and touch.
- Red blood cells: Red blood cells or erythrocytes are biconcave disks-shaped, with no nucleus, and very small. These are flexible cells that might move along in the smallest capillaries. Hemoglobin provides the typical red color. The red blood cell size and number vary among species.
Answer:
What is the difference between the arctic and equator environment? In the Arctic environment there is snow so the environment is cold while there is dirt or sand in the equator environment, so it is hot.
Explanation:
If the lateral hypothalamus of a laboratory rat is surgically damaged, the animal usually exhibits a dramatic reduction in ingestive behaviour.
The lateral hypothalamus responds to any external or internal stimulation that causes you to feel hungry. Once we have eaten, a ventromedial hypothalamus sends signals to the brain and telling us that like we are feeling full and we had enough food consumed, and this cycle continues.
Ingestive behaviour refers to feeding and drinking feelings which is a complex process that may involve a variety of the psychological factors, metabolic processes, neuronal mechanisms, and gastrointestinal mechanisms which convey neural and humoral signals to the central nervous system (CNS).
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