HESI A2 Anatomy & Physiology V1&V2
Part B 2024
single nucleus, branched striated muscle fibers and join at the intercalated disc. ANS: How would you
define Cardiac muscles?
single nucleus, branched striated muscle fibers and join at the intercalated disc.
Striated, multinucleated, & cylindrical fibers
spindle-shaped, nonstriated, and have a single nucleus
Striated, multinucleated, & cylindrical fibers ANS: How would you describe skeletal muscles?
single nucleus, branched striated muscle fibers and join at the intercalated disc.
Striated, multinucleated, & cylindrical fibers
spindle-shaped, nonstriated, and have a single nucleus
spindle-shaped, nonstriated, and have a single nucleus ANS: How would you describe smooth muscle?
single nucleus, branched striated muscle fibers and join at the intercalated disc.
Striated, multinucleated, & cylindrical fibers
spindle-shaped, nonstriated, and have a single nucleus
The intestine ANS: Which of the following contains nonstriated muscle fibers?
A. Pectoralis major
B. The Heart
C. The intestine
D. Quad. muscle
Extensors ANS: Which group of muscles increases the angle at a joint?
Flexors
,Pronators
Extensors
Abductors
Flexors ANS: Which group of muscles decrease the angle at a joint?
extensors
flexors
pronators
abductors
Abductors ANS: which group of muscles pull the limb away from the midline?
Adduction
inversion
abduction
flexion
Myosin ANS: Which of the following cleaves (Split) ATP to generate energy for muscle contraction?
ACTIN
MYOSIN
TROPOMYOSIN
TROPONIN
sarcoplasmic reticulum ANS: What releases calcium molecules in muscle contraction?
Troponin, actin ANS: Calcium binds to_______, which leads to the active site of_________ being
exposed
,A. actin, myosin
B. troponin, actin
C. myosin, tropomyosin
D. troponin, actin
Actin ANS: The myosin head full of energy from cleaved ATP binds to______ and forms cross bridges
A. myosin
B. actin
C. tropomyosin
D. troponin
Calcium binds to troponin and leads to the uncovering of the active site of actin ANS: What is the role of
calcium in muscle contraction?
*Calcium binds to tropomyosin and leads to the uncovering of the active site of actin
*Calcium binds to actin and leads to the uncovering site of myosin
*Calcium binds to troponin and leads to the uncovering of the site actin
*Calcium binds to troponin and leads to the uncovering site of myosin
Actin ANS: Contraction occurs because of cross bridges between myosin and?_____
The dermis ANS: The layer of skin that contains a high number of blood vessels, as well as elastic and
collagen fibers is the ____________.
Langerhan cells ANS: Which of the following is not found in the dermis?
Nerves
Sensory receptors
, Langerhan cells
Sebaceous gland
Hypothalamus ANS: Which structure in the nervous system works together with the endocrine system?
Cerebral cortex
Hypothalamus
Pons
Medulla oblongata
Afferent (Sensory) neurons ANS: nerve fibers responsible for bringing sensory information from the
outside world into the brain.
Efferent
Afferent
Motor
Somatic
One cell body, many dendrites, and one axon ANS: A neuron has
One cell body, one dendrite, and one axon
One cell body, many dendrites, and one axon
Many cell bodies, one dendrite, and one axon
One cell body, one dendrite, and many axons
Sarcomere ANS: fundamental unit of contraction and is defined as the region between two Z-lines.
Myofibril
Sarcomere
Sarcoplasmic reticulum
Part B 2024
single nucleus, branched striated muscle fibers and join at the intercalated disc. ANS: How would you
define Cardiac muscles?
single nucleus, branched striated muscle fibers and join at the intercalated disc.
Striated, multinucleated, & cylindrical fibers
spindle-shaped, nonstriated, and have a single nucleus
Striated, multinucleated, & cylindrical fibers ANS: How would you describe skeletal muscles?
single nucleus, branched striated muscle fibers and join at the intercalated disc.
Striated, multinucleated, & cylindrical fibers
spindle-shaped, nonstriated, and have a single nucleus
spindle-shaped, nonstriated, and have a single nucleus ANS: How would you describe smooth muscle?
single nucleus, branched striated muscle fibers and join at the intercalated disc.
Striated, multinucleated, & cylindrical fibers
spindle-shaped, nonstriated, and have a single nucleus
The intestine ANS: Which of the following contains nonstriated muscle fibers?
A. Pectoralis major
B. The Heart
C. The intestine
D. Quad. muscle
Extensors ANS: Which group of muscles increases the angle at a joint?
Flexors
,Pronators
Extensors
Abductors
Flexors ANS: Which group of muscles decrease the angle at a joint?
extensors
flexors
pronators
abductors
Abductors ANS: which group of muscles pull the limb away from the midline?
Adduction
inversion
abduction
flexion
Myosin ANS: Which of the following cleaves (Split) ATP to generate energy for muscle contraction?
ACTIN
MYOSIN
TROPOMYOSIN
TROPONIN
sarcoplasmic reticulum ANS: What releases calcium molecules in muscle contraction?
Troponin, actin ANS: Calcium binds to_______, which leads to the active site of_________ being
exposed
,A. actin, myosin
B. troponin, actin
C. myosin, tropomyosin
D. troponin, actin
Actin ANS: The myosin head full of energy from cleaved ATP binds to______ and forms cross bridges
A. myosin
B. actin
C. tropomyosin
D. troponin
Calcium binds to troponin and leads to the uncovering of the active site of actin ANS: What is the role of
calcium in muscle contraction?
*Calcium binds to tropomyosin and leads to the uncovering of the active site of actin
*Calcium binds to actin and leads to the uncovering site of myosin
*Calcium binds to troponin and leads to the uncovering of the site actin
*Calcium binds to troponin and leads to the uncovering site of myosin
Actin ANS: Contraction occurs because of cross bridges between myosin and?_____
The dermis ANS: The layer of skin that contains a high number of blood vessels, as well as elastic and
collagen fibers is the ____________.
Langerhan cells ANS: Which of the following is not found in the dermis?
Nerves
Sensory receptors
, Langerhan cells
Sebaceous gland
Hypothalamus ANS: Which structure in the nervous system works together with the endocrine system?
Cerebral cortex
Hypothalamus
Pons
Medulla oblongata
Afferent (Sensory) neurons ANS: nerve fibers responsible for bringing sensory information from the
outside world into the brain.
Efferent
Afferent
Motor
Somatic
One cell body, many dendrites, and one axon ANS: A neuron has
One cell body, one dendrite, and one axon
One cell body, many dendrites, and one axon
Many cell bodies, one dendrite, and one axon
One cell body, one dendrite, and many axons
Sarcomere ANS: fundamental unit of contraction and is defined as the region between two Z-lines.
Myofibril
Sarcomere
Sarcoplasmic reticulum
