Questions and Answers
The function of the root hair plexus is to ____.
Nutrients reach the surface of the skin (epidermis) through the process of ____?
The reason the hypodermis acts as a shock absorber is that ____.
The dermis is a strong, flexible connective tissue layer. Which of the following cell types are likely to be found in the dermis?
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Which of the following does NOT describe skeletal muscle?
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What is the structural unit of compact bone?
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The shape of the external ear is maintained by ____.
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Which hormone increases osteoclast activity to release more calcium ions into the bloodstream?
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What is the major function of the intervertebral discs?
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Paranasal sinuses are found in which of these facial bones?
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Yellow bone marrow contains a large percentage of ____.
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Spongy bones are made up of a framework called _____.
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Osteogenesis (also known as ossification) is the process of _____.
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The ethmoid bone is composed of all of the following except the ______.
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Chondroblasts ____.
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____ epithelium appears to have two or three layers of cells, but all the cells are in contact with the basement membrane.
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A multilayered epithelium with cuboidal basal cells and flat cells at its surface would be classified as _____.
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The hyoid bone is unique because it ____.
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In addition to protection, the skin serves other functions. Which of the following is another vital function of the skin?
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Epithelial tissue _____.
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Which is true concerning muscle tissue?
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What are the three main components of connective tissue?
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The central (Haversian) canal that runs through the core of each osteon is the site of _____.
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Which of the following examples illustrates homeostasis maintained by a negative feedback?
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Which of the following statements best describes the way in which the body's natural defenses protect the skin from the effects of UV damage?
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Select the most correct statement concerning skin cancer.
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Which of the following is not found in cartilage but is in bone?
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A needle would pierce the epidermal layers of the forearms in which order?
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The dermis ____.
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Which of the following is a single-celled layer of epithelium that forms the lining of serous membranes?
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Select the correct statement regarding adipose tissue.
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A blow to the cheek is most likely to break what superficial bone part?
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Which of the following epithelia forms the walls of the air sacs across which gas exchange occurs in the lungs?
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Skin macrophages that help activate the immune system are called ____.
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The membranous areas between the cranial bones of the fetal skull are called ____.
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The cell responsible for secreting the matrix of bone is the ____.
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Which of the following is true about paranasal sinuses?
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What kind of tissue is the forerunner of long bones in the embryo?
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Heart muscle cells would tend to separate without ____.
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Which of the following is not a function of the skeletal system?
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Matrix is composed of ____.
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Which structure allows the diaphysis of the bone to increase in length until early childhood, as well as shaping the articular surfaces?
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Which of the following is an abnormal lateral curvature of the vertebral column often seen in the thoracic region?
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The most abundant skeletal cartilage type is ____.
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Study Notes
Root Hair Plexus Function
- The root hair plexus allows hair to assist in touch sensation.
Nutrient Delivery to the Skin
- Nutrients reach the epidermis by utilizing products from merocrine glands.
Hypodermis Function
- The hypodermis acts as a shock absorber largely due to its significant adipose tissue content.
Dermis Cell Types
- The dermis contains fibroblasts, macrophages, and mast cells.
Skeletal Muscle Characteristics
- Skeletal muscle is voluntary and multinucleated, but it consists of non-branching cells.
Structural Unit of Compact Bone
- The osteon is the structural unit of compact bone.
External Ear Structure
- The shape of the external ear is maintained by elastic cartilage.
Osteoclast Activity
- Parathyroid hormone increases osteoclast activity, releasing more calcium ions into the bloodstream.
Intervertebral Discs Function
- Intervertebral discs primarily absorb shock in the vertebral column.
Paranasal Sinuses Locations
- Paranasal sinuses are found in the maxillae among other facial bones.
Yellow Bone Marrow Composition
- Yellow bone marrow consists largely of fat.
Composition of Spongy Bone
- Spongy bone is made up of a framework called trabeculae.
Osteogenesis Process
- Osteogenesis is defined as the process of bone formation.
Ethmoid Bone Components
- The ethmoid bone does not include the inferior nasal concha.
Chondroblasts Function
- Chondroblasts are located deep to the perichondrium, dividing and secreting new matrix.
Pseudostratified Columnar Epithelium
- Pseudostratified columnar epithelium appears to have multiple layers but each cell contacts the basement membrane.
Stratified Squamous Epithelium
- A multilayered epithelium with cuboidal basal cells and flat surface cells is classified as stratified squamous.
Unique Hyoid Bone
- The hyoid bone is the only bone that does not articulate with other bones.
Skin Functions
- Besides protection, skin converts modified epidermal cholesterol to a vitamin D precursor, crucial for calcium absorption.
Epithelial Tissue Features
- Epithelial tissue has a basement membrane, lacking blood vessels and is usually acellular.
Muscle Tissue Characteristics
- Muscle tissue is highly cellular and well vascularized, containing contractile units.
Connective Tissue Components
- The main components of connective tissue are ground substance, fibers, and cells.
Central Canal in Osteons
- The central (Haversian) canal contains blood vessels and nerve fibers.
Homeostasis and Negative Feedback
- Eccrine glands release sweat in response to heat, illustrating homeostasis via negative feedback.
Skin UV Protection Mechanism
- The skin's natural defenses involve melanin dispersion, acting as a natural sunscreen against UV damage.
Skin Cancer Types
- Melanomas are the most dangerous skin cancers and should be removed quickly to prevent metastasis.
Cartilage vs Bone
- Blood vessels are found in bone but not in cartilage.
Epidermal Layer Penetration
- A needle would pierce the epidermal layers in the order: corneum, granulosum, spinosum, basale.
Dermis Structure
- The dermis has two layers: papillary and reticular.
Serous Membrane Epithelium
- Simple squamous epithelium lines serous membranes.
Adipose Tissue Function
- The primary function of adipose tissue is nutrient storage.
Facial Bone Impact
- A blow to the cheek is most likely to break the zygomatic process.
Lung Gas Exchange Epithelium
- Simple squamous epithelium forms the walls of air sacs for gas exchange in lungs.
Immune System Role in Skin
- Skin macrophages, known as dendritic cells, help activate the immune system.
Fetal Skull Membranous Areas
- The areas between cranial bones of the fetal skull are called fontanelles.
Bone Matrix Secretion
- Osteoblasts are responsible for secreting the bone matrix.
Purpose of Paranasal Sinuses
- Paranasal sinuses enhance voice resonance and lighten the skull.
Long Bone Tissue Precursor
- Hyaline cartilage serves as the precursor for long bones in the developing embryo.
Heart Muscle Cell Structure
- Intercalated discs prevent heart muscle cells from separating.
Skeletal System Functions
- The skeletal system supports, stores minerals, produces blood cells, but does not facilitate communication.
Matrix Composition
- Matrix is comprised of fibers and ground substance.
Bone Growth Structure
- The epiphyseal plate allows for bone lengthening and shaping of articular surfaces.
Abnormal Vertebral Curvature
- Scoliosis is characterized by an abnormal lateral curvature of the vertebral column.
Most Abundant Skeletal Cartilage
- The most abundant type of skeletal cartilage is hyaline cartilage.
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Description
Test your knowledge on the functions of the root hair plexus and nutrient absorption in the skin. This quiz covers essential concepts related to hair growth and skin physiology. See how well you understand the intricacies of anatomy in this fun quiz.