D312 - Anatomy & Physiology I
QUESTIONS AND VERIFIED
CORRECT ANSWERS
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Which degree of burn affects the underlying bones and muscles? - CORRECT ANSWER-Fourth-
degree burns are the most severe and affect not only all layers of the skin but also the
underlying bones, muscles, and tendons. These burns often appear charred or white and are
typically painless because the nerve endings are destroyed.
Which part of the long bone has an epiphyseal line? - CORRECT ANSWER-The epiphyseal line is
located at the junction between the diaphysis (the shaft or central part of the bone) and the
epiphysis (the end part of the bone) in long bones. This line is a remnant of the epiphyseal plate
(growth plate) and indicates that the bone has completed its growth in length.
Which suture is present between the left and right parietal lobes? - CORRECT ANSWER-The
suture present between the left and right parietal lobes is the sagittal suture. This suture runs
along the midline of the skull, connecting the two parietal bones.
Which two bones form the pectoral girdle? - CORRECT ANSWER-The pectoral girdle, also known
as the shoulder girdle, is formed by two bones: the clavicle (collarbone) and the scapula
(shoulder blade). These bones work together to connect the upper limb to the axial skeleton
and provide a wide range of motion for the shoulder and arm.
What are the periodic invaginations in sarcolemma called? - CORRECT ANSWER-The periodic
invaginations in the sarcolemma are called T-tubules (transverse tubules). These structures play
a crucial role in conducting electrical impulses from the surface of the muscle fiber to its
interior, ensuring that the muscle contracts efficiently and uniformly.
,Which medially placed group of muscles is part of the erector spinae? - CORRECT ANSWER-The
spinalis muscles are the most medially placed group within the erector spinae muscle group.
These muscles are located closest to the spine and are responsible for extending and laterally
flexing the cervical and thoracic regions of the spine.
Which thigh muscle is situated below the adductor longus? - CORRECT ANSWER-The muscle
situated below the adductor longus is the adductor magnus. This muscle is a large, triangular
muscle located in the medial compartment of the thigh and plays a significant role in adducting
and medially rotating the thigh
What is the role of oligodendrocytes? - CORRECT ANSWER-Oligodendrocytes play a crucial role
in the central nervous system (CNS) by producing the myelin sheath that insulates axons. This
myelination is essential for the efficient transmission of electrical impulses along nerve fibers,
which helps in the rapid and coordinated communication between neurons. Additionally,
oligodendrocytes provide metabolic support to neurons and contribute to maintaining a stable
microenvironment within the CNS.
Which membrane channel is able to open due to a physical distortion? - CORRECT ANSWER-The
membrane channel that opens due to physical distortion is the mechanically gated channel.
These channels respond to mechanical changes such as stretch, pressure, or vibration and are
crucial in sensory processes like touch and hearing.
Which nerve controls the lifting of the upper eyelid? - CORRECT ANSWER-The nerve responsible
for controlling the lifting of the upper eyelid is the oculomotor nerve (cranial nerve III). It
innervates the levator palpebrae superioris muscle, which is essential for elevating the upper
eyelid.
Which hormones are secreted from the posterior pituitary gland? - CORRECT ANSWER-The
posterior pituitary gland secretes two main hormones: oxytocin and antidiuretic hormone
(ADH), also known as vasopressin.
,Oxytocin plays a crucial role in childbirth and lactation, stimulating uterine contractions and milk
ejection.
Antidiuretic hormone (ADH) helps regulate water balance in the body by increasing water
reabsorption in the kidneys.
Which endocrine gland secretes glucagon? - CORRECT ANSWER-Glucagon is secreted by the
pancreas. Specifically, it is produced by the alpha cells in the islets of Langerhans within the
pancreas.
Glucagon plays a crucial role in regulating blood sugar levels by promoting the conversion of
stored glycogen in the liver into glucose, which is then released into the bloodstream.
Which glycoprotein hormone is secreted from the anterior pituitary gland? - CORRECT
ANSWER-The anterior pituitary gland secretes several glycoprotein hormones, including:
Luteinizing hormone (LH): Stimulates the secretion of sex hormones by the ovaries and testes.
Follicle-stimulating hormone (FSH): Promotes the growth and maturation of ovarian follicles in
females and spermatogenesis in males.
Thyroid-stimulating hormone (TSH): Stimulates the thyroid gland to produce thyroid hormones.
These hormones play crucial roles in regulating various physiological processes, including
reproduction and metabolism.
The cell's central organelle; contains the cell's DNA - CORRECT ANSWER-Nucleus
The jelly-like substance in which the cell organelles and nucleus are embedded - CORRECT
ANSWER-Cytoplasm
A thin and flexible membrane surrounding the cells that acts as a barrier between the
intracellular and the extracellular fluids - CORRECT ANSWER-Cell membrane
A membrane-associated protein that spans the entire width of the lipid bilayer. - CORRECT
ANSWER-Integral protein
, A membrane-spanning protein that has an inner pore that allows the passage of one or more
substances. - CORRECT ANSWER-Channel protein
A protein molecule that contains a binding site for another specific molecule (called a ligand). -
CORRECT ANSWER-Receptor
A molecule that binds with specificity to a specific receptor molecule. - CORRECT ANSWER-
Ligand
A protein that has one or more carbohydrates attached. - CORRECT ANSWER-Glycoprotein
A coating of sugar molecules that surrounds the cell membrane. - CORRECT ANSWER-Glycocalyx
A membrane-associated protein that does not span the width of the lipid bilayer, but is attached
peripherally to integral proteins, membrane lipids, or other components of the membrane. -
CORRECT ANSWER-Peripheral protein
The solution or aqueous part within the cytoplasm in which many organelles are suspended. -
CORRECT ANSWER-Cytosol
Any of several different types of membrane-enclosed specialized structures in the cell that
perform specific functions for the cell. - CORRECT ANSWER-Organelles
A network of membranes that are important for protein and lipid synthesis. - CORRECT
ANSWER-Endoplasmic reticulum
The cell organelle responsible for protein synthesis. - CORRECT ANSWER-Ribosome
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ LATEST 100%
GUARANTEED PASS
Which degree of burn affects the underlying bones and muscles? - CORRECT ANSWER-Fourth-
degree burns are the most severe and affect not only all layers of the skin but also the
underlying bones, muscles, and tendons. These burns often appear charred or white and are
typically painless because the nerve endings are destroyed.
Which part of the long bone has an epiphyseal line? - CORRECT ANSWER-The epiphyseal line is
located at the junction between the diaphysis (the shaft or central part of the bone) and the
epiphysis (the end part of the bone) in long bones. This line is a remnant of the epiphyseal plate
(growth plate) and indicates that the bone has completed its growth in length.
Which suture is present between the left and right parietal lobes? - CORRECT ANSWER-The
suture present between the left and right parietal lobes is the sagittal suture. This suture runs
along the midline of the skull, connecting the two parietal bones.
Which two bones form the pectoral girdle? - CORRECT ANSWER-The pectoral girdle, also known
as the shoulder girdle, is formed by two bones: the clavicle (collarbone) and the scapula
(shoulder blade). These bones work together to connect the upper limb to the axial skeleton
and provide a wide range of motion for the shoulder and arm.
What are the periodic invaginations in sarcolemma called? - CORRECT ANSWER-The periodic
invaginations in the sarcolemma are called T-tubules (transverse tubules). These structures play
a crucial role in conducting electrical impulses from the surface of the muscle fiber to its
interior, ensuring that the muscle contracts efficiently and uniformly.
,Which medially placed group of muscles is part of the erector spinae? - CORRECT ANSWER-The
spinalis muscles are the most medially placed group within the erector spinae muscle group.
These muscles are located closest to the spine and are responsible for extending and laterally
flexing the cervical and thoracic regions of the spine.
Which thigh muscle is situated below the adductor longus? - CORRECT ANSWER-The muscle
situated below the adductor longus is the adductor magnus. This muscle is a large, triangular
muscle located in the medial compartment of the thigh and plays a significant role in adducting
and medially rotating the thigh
What is the role of oligodendrocytes? - CORRECT ANSWER-Oligodendrocytes play a crucial role
in the central nervous system (CNS) by producing the myelin sheath that insulates axons. This
myelination is essential for the efficient transmission of electrical impulses along nerve fibers,
which helps in the rapid and coordinated communication between neurons. Additionally,
oligodendrocytes provide metabolic support to neurons and contribute to maintaining a stable
microenvironment within the CNS.
Which membrane channel is able to open due to a physical distortion? - CORRECT ANSWER-The
membrane channel that opens due to physical distortion is the mechanically gated channel.
These channels respond to mechanical changes such as stretch, pressure, or vibration and are
crucial in sensory processes like touch and hearing.
Which nerve controls the lifting of the upper eyelid? - CORRECT ANSWER-The nerve responsible
for controlling the lifting of the upper eyelid is the oculomotor nerve (cranial nerve III). It
innervates the levator palpebrae superioris muscle, which is essential for elevating the upper
eyelid.
Which hormones are secreted from the posterior pituitary gland? - CORRECT ANSWER-The
posterior pituitary gland secretes two main hormones: oxytocin and antidiuretic hormone
(ADH), also known as vasopressin.
,Oxytocin plays a crucial role in childbirth and lactation, stimulating uterine contractions and milk
ejection.
Antidiuretic hormone (ADH) helps regulate water balance in the body by increasing water
reabsorption in the kidneys.
Which endocrine gland secretes glucagon? - CORRECT ANSWER-Glucagon is secreted by the
pancreas. Specifically, it is produced by the alpha cells in the islets of Langerhans within the
pancreas.
Glucagon plays a crucial role in regulating blood sugar levels by promoting the conversion of
stored glycogen in the liver into glucose, which is then released into the bloodstream.
Which glycoprotein hormone is secreted from the anterior pituitary gland? - CORRECT
ANSWER-The anterior pituitary gland secretes several glycoprotein hormones, including:
Luteinizing hormone (LH): Stimulates the secretion of sex hormones by the ovaries and testes.
Follicle-stimulating hormone (FSH): Promotes the growth and maturation of ovarian follicles in
females and spermatogenesis in males.
Thyroid-stimulating hormone (TSH): Stimulates the thyroid gland to produce thyroid hormones.
These hormones play crucial roles in regulating various physiological processes, including
reproduction and metabolism.
The cell's central organelle; contains the cell's DNA - CORRECT ANSWER-Nucleus
The jelly-like substance in which the cell organelles and nucleus are embedded - CORRECT
ANSWER-Cytoplasm
A thin and flexible membrane surrounding the cells that acts as a barrier between the
intracellular and the extracellular fluids - CORRECT ANSWER-Cell membrane
A membrane-associated protein that spans the entire width of the lipid bilayer. - CORRECT
ANSWER-Integral protein
, A membrane-spanning protein that has an inner pore that allows the passage of one or more
substances. - CORRECT ANSWER-Channel protein
A protein molecule that contains a binding site for another specific molecule (called a ligand). -
CORRECT ANSWER-Receptor
A molecule that binds with specificity to a specific receptor molecule. - CORRECT ANSWER-
Ligand
A protein that has one or more carbohydrates attached. - CORRECT ANSWER-Glycoprotein
A coating of sugar molecules that surrounds the cell membrane. - CORRECT ANSWER-Glycocalyx
A membrane-associated protein that does not span the width of the lipid bilayer, but is attached
peripherally to integral proteins, membrane lipids, or other components of the membrane. -
CORRECT ANSWER-Peripheral protein
The solution or aqueous part within the cytoplasm in which many organelles are suspended. -
CORRECT ANSWER-Cytosol
Any of several different types of membrane-enclosed specialized structures in the cell that
perform specific functions for the cell. - CORRECT ANSWER-Organelles
A network of membranes that are important for protein and lipid synthesis. - CORRECT
ANSWER-Endoplasmic reticulum
The cell organelle responsible for protein synthesis. - CORRECT ANSWER-Ribosome
