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Questions and Answers
What type of epithelium is the epidermis?
What type of epithelium is the epidermis?
- Simple squamous epithelium
- Columnar epithelium
- Cuboidal epithelium
- Stratified epithelium (correct)
Why is the epidermis extremely thick on the palms of the hands and the soles of the feet?
Why is the epidermis extremely thick on the palms of the hands and the soles of the feet?
- To protect the underlying tissues from infection
- Because these areas are highly sensitive
- To increase the surface area for sensory receptors
- To withstand the wear and tear that occurs in these regions (correct)
What would be the likely consequence of a thin epidermis on the palms of the hands?
What would be the likely consequence of a thin epidermis on the palms of the hands?
- Enhanced protection against UV radiation
- Increased risk of infection (correct)
- Faster healing of wounds
- Improved sensation in the region
What is the primary function of a fixator?
What is the primary function of a fixator?
What is a characteristic of the epidermis that allows it to withstand wear and tear?
What is a characteristic of the epidermis that allows it to withstand wear and tear?
What happens to the tone of a fixator when it contracts?
What happens to the tone of a fixator when it contracts?
Which of the following regions would most likely have a thicker epidermis?
Which of the following regions would most likely have a thicker epidermis?
What type of contraction does a fixator exhibit?
What type of contraction does a fixator exhibit?
What is the relationship between a fixator and the prime mover?
What is the relationship between a fixator and the prime mover?
What would happen if a fixator failed to contract isometrically?
What would happen if a fixator failed to contract isometrically?
What type of cartilage are the discs or wedges composed of in certain synovial joints?
What type of cartilage are the discs or wedges composed of in certain synovial joints?
In which joint can articular discs typically be found?
In which joint can articular discs typically be found?
What is the primary function of articular discs in synovial joints?
What is the primary function of articular discs in synovial joints?
What is the term used to describe the structure that is interposed between the articular surfaces of the bones in certain synovial joints?
What is the term used to describe the structure that is interposed between the articular surfaces of the bones in certain synovial joints?
What is the purpose of the articular discs in terms of joint movement?
What is the purpose of the articular discs in terms of joint movement?
What is a primary characteristic of bone tissue?
What is a primary characteristic of bone tissue?
What does bone consist of?
What does bone consist of?
What category of tissue does bone belong to?
What category of tissue does bone belong to?
What is unique about bone compared to other tissues?
What is unique about bone compared to other tissues?
How would you describe the composition of bone?
How would you describe the composition of bone?
What is a characteristic of irregular bones?
What is a characteristic of irregular bones?
Which of the following bones is an example of an irregular bone?
Which of the following bones is an example of an irregular bone?
What is a common feature of irregular bones?
What is a common feature of irregular bones?
Which of the following is NOT an example of an irregular bone?
Which of the following is NOT an example of an irregular bone?
What is the primary function of irregular bones?
What is the primary function of irregular bones?
Study Notes
Epidermis
- The epidermis is a stratified epithelium.
- On the palms of the hands and the soles of the feet, the epidermis is extremely thick to withstand wear and tear.
Muscle
- A fixator contracts isometrically to stabilize the origin of the prime mover.
- Fixator contraction increases tone but does not produce movement.
Joints
- In certain synovial joints (e.g., knee joint), discs or wedges of fibrocartilage are interposed between articular surfaces of bones.
- These fibrocartilage discs are referred to as articular discs.
Bones
- Bone is a living tissue consisting of cells, fibers, and matrix, like other connective tissues.
- Scapulae, although irregular, are classified as bones.
- Irregular bones include those not assigned to previous groups, such as:
- Bones of the skull
- Vertebrae
- Pelvic bones
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Description
Learn about the epidermis, a stratified epithelium, and its adaptations in different parts of the body. Discover how it withstands wear and tear in areas like palms and soles.
